Pinch valve, method of using a pinch valve, cleaning device

Abstract

The present application relates to a kind of pinch valves, including hose;First clamping body, is arranged in one side of hose;Second clamping body, relative to first clamping body is arranged in the other side of hose;Motor;Transmission mechanism, respectively with motor, first clamping body, second clamping body transmission connection, under the drive of motor, first clamping body, second clamping body are relatively close and extrude hose, relative separation and release hose;Distance detector, for detecting the relative distance of first clamping body, second clamping body;Signal acquisition circuit, motor electric signal connection, for detecting motor operating parameter.The pinch valve can meet the demand of large flux, can be applied to negative pressure environment, and can effectively judge the existence of foreign matter in hose.The present application relates to the use method of the pinch valve and the cleaning device using the pinch valve.

Description

Technical Field

[0001] This invention relates to a clamp valve, a method of using the clamp valve, and a cleaning device. Background Technology

[0002] Pinch valves, also known as pipe clamp valves, squeeze valves, airlock valves, or shut-off valves, utilize pneumatic, electric, manual, or hydraulic actuation to compress a sleeve, achieving on / off / regulation. Solenoid pinch valves are a type of pinch valve. Driven by a solenoid, they control the flow of the flexible hose by squeezing or releasing it. The medium only passes through the hose; other parts of the valve body do not contact the medium. This means that, compared to other types of solenoid valves, solenoid pinch valves can handle media containing particles.

[0003] Cleaning machines also require valves capable of handling larger media. Compared to ordinary valves that require a specific medium, pinch valves are more suitable for the waste collection piping systems of cleaning machines. However, applying electromagnetic pinch valves to these systems presents several problems. First, electromagnetic pinch valves, based on their electromagnetic operating principle, have limited power and typically have a small valve diameter, making them unsuitable for the high-flow-rate applications in cleaning machines that require handling water, solids, long fibers, and mixtures thereof. Second, the waste collection piping systems in cleaning machines operate under negative pressure, which electromagnetic pinch valves also cannot function properly, failing to meet the operating conditions of cleaning machines. Third, the waste collection piping systems in cleaning machines contain a large amount of easily adhered and odor-producing waste. The flexible hoses of electromagnetic pinch valves are prone to accumulating foreign matter, which, if not addressed promptly, can lead to odors and poor sealing, negatively impacting the user experience and effectiveness of the cleaning machine. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a clamp valve that can meet the requirements of high flow rate, can be applied in negative pressure environment, and can effectively detect the presence of foreign objects in the hose, in contrast to the above-mentioned prior art.

[0005] The second technical problem to be solved by the present invention is to provide a method for using a clamp valve that can detect the presence of foreign objects in a hose and clean them in a timely manner, in contrast to the above-mentioned prior art.

[0006] The second technical problem to be solved by the present invention is to provide a cleaning device that uses the aforementioned pinch valve, in contrast to the prior art.

[0007] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a pinch valve, comprising...

[0008] hose;

[0009] The first clamping element is located on one side of the hose;

[0010] A second clamping body is arranged on the other side of the hose relative to the first clamping body;

[0011] characterized in that it further comprises

[0012] a motor;

[0013] a transmission mechanism, which is in driving connection with the motor, the first clamping body and the second clamping body respectively, and drives the first clamping body and the second clamping body to approach each other to press the hose or separate from each other to release the hose under the driving of the motor;

[0014] a distance detector, which is used to detect the relative distance between the first clamping body and the second clamping body;

[0015] a signal acquisition circuit, which is electrically connected with the motor and is used to detect the working parameters of the motor.

[0016] The transmission mechanism comprises a gear connected with the driving end of the motor, and a first rack and a second rack which are arranged on the two sides of the gear respectively and are in engagement with the gear, the first rack is connected with the first clamping body, and the second rack is connected with the second clamping body.

[0017] As an improvement, the distance detector comprises a first distance sensor and a second distance sensor which are arranged opposite to each other and are spaced apart along the clamping direction, the first distance sensor is connected with the first rack, and the second distance sensor is connected with the second rack.

[0018] In order to facilitate installation, a mounting seat is further provided, the motor and the transmission mechanism are arranged on the mounting seat, and the first rack and the second rack are movably constrained on the mounting seat along the clamping direction.

[0019] Preferably, a first frame body is movably constrained on the mounting seat along the clamping direction, the first rack is formed on the first frame body, and the end of the first clamping body is connected with the end of the first frame body through a connecting rod.

[0020] A second frame body is movably constrained above the first frame body along the clamping direction, the second rack is formed on the second frame body, and the second clamping body is connected with the end of the second frame body.

[0021] In order to effectively protect the hose and also realize the connection between the hose and other components, so that the pipe clamping valve can be installed as a whole, a first buffer piece is arranged on the hose corresponding to the clamping position of the first clamping body, and a rod body is arranged on the first buffer piece and penetrates into the first clamping body along the clamping direction.

[0022] A second buffer piece is arranged on the hose corresponding to the clamping position of the second clamping body, and the second buffer piece is connected with the second clamping body.

[0023] Preferably, a hollow valve body is further included, the hose is connected to the valve body, and a flushing port for connecting a water source is arranged on the valve body.

[0024] The technical scheme adopted by the present application to solve the second technical problem is a clamp valve using method, characterized in that the clamp valve using method is the clamp valve as described above.

[0025] The clamp valve using method comprises the following steps:

[0026] The preset clamp valve is in a closed state, a corresponding motor load threshold P0, and a calibrated relative distance L0 of the first clamping body and the second clamping body are obtained.

[0027] When the clamp valve is controlled to clamp the hose to perform a clamp valve closing action, the working parameters of the motor are detected and acquired, and the corresponding motor load P is calculated, when the motor load P reaches the load threshold P0, the relative distance L of the current first clamping body and the second clamping body is obtained, and L is compared with the calibrated relative distance L0, if L>L0, it is judged that there is foreign matter in the hose.

[0028] In order to facilitate water flowing into the clamp valve to realize flushing of the inside of the clamp valve, the clamp valve further comprises a hollow valve body, the hose is connected to the valve body, and a flushing port for connecting a water source is arranged on the valve body.

[0029] When it is judged that there is foreign matter in the hose, water is supplied into the hose from the flushing port to flush the hose.

[0030] The technical scheme adopted by the present application to solve the third technical problem is a cleaning device, characterized in that the cleaning device comprises a base station and a cleaning machine.

[0031] The base station is provided with a clean water tank, a water pump, a sewage tank, a fan, a first control module, and the clamp valve as claimed in claim 7, and the water pump, the fan, and the motor, the distance detector, and the signal acquisition circuit in the clamp valve are electrically connected to the first control module.

[0032] The water pump is connected between the water outlet of the clean water tank and the flushing port of the clamp valve, the inlet of the sewage tank is connected to the free end of the hose, the fan is arranged downstream of the sewage tank, and the base station is provided with a first docking port which is docked with the valve body.

[0033] The cleaning machine is provided with a sewage separation cavity and a second control module, and the second control module is in communication connection with the first control module.

[0034] The sewage separation cavity is provided with a water level detector which is in electrical signal connection with the second control module, the cleaning machine is provided with a second docking port corresponding to the outlet of the sewage separation cavity, and the cleaning machine can be moved to the base station so that the second docking port is docked with the first docking port.

[0035] In order to realize the self-cleaning of the cleaning machine and the pinch valve, the following steps are adopted for the self-cleaning work.

[0036] The cleaning machine moves to the base station so that the second interface is opposite to the first interface.

[0037] The pinch valve is controlled to be opened, the water pump is controlled to work so that the water in the clean water tank enters the pinch valve through the flushing port and flows into the separation cavity in the cleaning machine; the water level information in the separation cavity is detected, when the water level in the separation cavity reaches the preset high water level threshold, the water pump is controlled to stop working; the fan is controlled to work so that the sewage in the separation cavity is sucked into the sewage tank through the pinch valve, realizing the self-cleaning of the separation cavity and the pinch valve; when the water level in the separation cavity reaches the preset low water level threshold, the pinch valve is controlled to be closed, and the fan is controlled to stop working.

[0038] In order to timely find the abnormal situation of the pinch valve, and then facilitate the processing thereof, when the pinch valve is controlled to be closed, the working parameters of the motor are detected and acquired, and the corresponding motor load P is calculated, when the motor load P reaches the load threshold P0, the relative distance L of the first clamping body and the second clamping body is acquired, L is compared with the calibrated relative distance L0, if L>L0, it is judged that there is foreign matter in the hose.

[0039] Further, the pinch valve is closed invalidly or damaged, when it is judged that there is foreign matter in the hose, the self-cleaning of the pinch valve is carried out according to the steps of the self-cleaning work.

[0040] Compared with the prior art, the advantages of the present application are that: the pinch valve in the present application adopts a motor to drive the clamping of the hose, the driving power is sufficient, and can meet the clamping demand of the large-diameter hose; at the same time, the large-diameter hose can meet the working demand under the negative pressure condition. In addition, the pinch valve is provided with a signal acquisition circuit for detecting the relative distance of the first clamping body and the second clamping body and for detecting the working parameters of the motor, so that the detection of whether the hose can be closed and whether there is foreign matter in the hose can be simply realized based on the comparison of the distance data and the motor working parameters, and the purpose of timely finding the foreign matter in the hose is achieved, facilitating the user to timely maintain and process.

[0041] The working method of the pinch valve in the present application can timely find the situation that there is foreign matter in the hose. On this basis, flushing processing can also be carried out to prevent the pinch valve from being unable to close or being damaged by foreign matter.

[0042] The cleaning device in the present application uses the pinch valve, which can timely find the situation that there is foreign matter in the pinch valve, and avoids the situation that the pipeline cannot be closed. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 The pinch valve in the embodiment of the present application.

[0044] Figure 2 It is a perspective exploded view of the pinch valve in the embodiment of the present application.

[0045] Figure 3 It is an architectural view of the cleaning device in the embodiment of the present application. DETAILED DESCRIPTION

[0046] The present application is further described in detail below with reference to the embodiments of the drawings.

[0047] As shown in Figure 1 and Figure 2 , a pinch valve in the embodiment includes a valve body 8, a hose 1, a first clamping body 2, a second clamping body 3, a motor 4, a transmission mechanism 5, a distance sensor, and a signal acquisition circuit.

[0048] The valve body 8 is provided as the basic structure of the pinch valve, is hollow and consistent with the hole diameter of the hose 1, and the hose 1 is connected to the valve body 8.

[0049] The through diameter of the hose 1 is specifically set according to the application environment of the pinch valve, and in the embodiment, a large-diameter hose 1 applicable to the cleaning device can be selected as needed, which has a certain strength and is not automatically attached together in the negative pressure environment when used in the negative pressure ring, but the large-diameter hose 1 needs a larger power when clamped off.

[0050] The first clamping body 2 and the second clamping body 3 are arranged on both sides of the hose 1, so that when the first clamping body 2 and the second clamping body 3 are relatively close, the hose 1 is tightened to be in the off state, and when the first clamping body 2 and the second clamping body 3 are relatively far away, the hose 1 is in its natural state, and the hose 1 is in the on state, and other media can pass through the hose 1.

[0051] The transmission mechanism 5 is respectively in transmission connection with the motor 4, the first clamping body 2, and the second clamping body 3, and under the driving of the motor 4, the first clamping body 2 and the second clamping body 3 are relatively close to each other to extrude the hose 1 to realize the closing of the pinch valve, and are relatively separated to release the hose 1 to realize the opening of the pinch valve. In the embodiment, the motor 4 is used as a power source to drive the relative movement of the first clamping body 2 and the second clamping body 3, and the motor 4 has sufficient power to ensure the completion of the closing and opening of the pinch valve.

[0052] The transmission mechanism 5 in the embodiment specifically comprises a gear 51 connected at the driving end of the motor 4, and a first rack 52 and a second rack 53 oppositely arranged at both sides of the gear 51 and engaged with the gear 51, the first rack 52 being connected with the first clamping body 2, and the second rack 53 being connected with the second clamping body 3. In operation, the motor 4 is controlled to rotate forward or reversely, the driving end of the motor 4 drives the gear 51 to rotate forward or reversely, and the first rack 52 and the second rack 53 move towards or away from each other based on the engagement connection relationship with the gear 51, thereby driving the first clamping body 2 and the second clamping body 3 to relatively approach or move away from each other, and thereby realizing the closing and opening operation of the pipe clamping valve.

[0053] The distance detector 6 is used to detect the relative distance between the first clamping body 2 and the second clamping body 3, which can adopt various detection structures capable of realizing distance detection in the prior art. The distance detector 6 in the embodiment comprises a first distance sensor 61 and a second distance sensor 62 oppositely and spacedly arranged along the clamping direction, the first distance sensor 61 being connected with the first rack 52, and the second distance sensor 62 being connected with the second rack 53. When the first rack 52 and the second rack 53 move towards or away from each other, the first distance sensor 61 and the second distance sensor 62 are driven to move synchronously, thereby changing the distance between the first distance sensor 61 and the second distance sensor 62, and thereby judging the relative distance relationship between the first clamping body 2 and the second clamping body 3 according to the distance between the first distance sensor 61 and the second distance sensor 62, and determining the state of the pipe clamping valve.

[0054] The signal acquisition circuit is electrically connected with the motor 4, and is used to detect the working parameters of the motor 4. In use, the signal acquisition circuit can be electrically connected with the control module, thereby transmitting the collected data to the control module. In the embodiment, the signal acquisition circuit is electrically connected with the first control module 105 in the base station 100.

[0055] In order to facilitate the integrated assembly of the components in the pipe clamping valve, and thereby facilitate the practical installation of the pipe clamping valve, the pipe clamping valve in the embodiment further comprises a mounting seat 7, the motor 4 and the transmission mechanism 5 are arranged on the mounting seat 7, and the soft pipe 1 is located beside the mounting seat 7 and between the first clamping body 2 and the second clamping body 3. In order to ensure safety in use, the mounting seat 7 in the embodiment comprises an upper shell and a lower shell oppositely buckled, and the upper shell and the lower shell are buckled to form a mounting cavity, the motor 4 and the transmission mechanism 5 are arranged in the mounting cavity of the mounting seat 7. The first rack 52 and the second rack 53 are movably constrained on the mounting seat 7 along the clamping direction.

[0056] In order to ensure the stability of the movement of the first rack 52 and the second rack 53, and ensure the reliability of the connection between the first rack 52 and the first clamping body 2 and the reliability of the connection between the second rack 53 and the second clamping body 3, the first frame 521 is slidingly constrained on the mounting seat 7 in the clamping direction, the first rack 52 is vertically formed on the side of the first frame 521, and the end of the first clamping body 2 is connected to the end of the first frame 521 through the connecting rod 522. The second frame 531 is slidingly constrained above the first frame 521 in the clamping direction, the second rack 53 is formed on the other side of the second frame 531, and the second clamping body 3 is connected to the end of the second frame 531. Based on the rotation of the gear 51, the first frame 521 is smoothly moved on the mounting seat 7, and the second frame 531 is smoothly moved on the first frame 521, and especially when the soft tube 1 is extruded, the first rack 52 and the second rack 53 will not be inclined based on the strength of the soft tube 1 itself, and the stability of the movement is ensured.

[0057] In addition, in order to ensure the integrity of the installation of the soft tube 1 between the first clamping body 2 and the second clamping body 3, and avoid the independent installation of the soft tube 1. In the embodiment, the first buffer piece 11 is arranged on the soft tube 1 corresponding to the clamping position of the first clamping body 2, the rod body 111 is arranged in the first clamping body 2 in the clamping direction, the rod body 111 can slide in the first clamping body 2 based on the movement of the first clamping body 2 and does not affect the clamping of the soft tube 1, and also avoids the disengagement of the soft tube 1 from the first clamping body 2. The second buffer piece 12 is arranged on the soft tube 1 corresponding to the clamping position of the second clamping body 3, and the second buffer piece 12 is connected to the second clamping body 3. In this way, the integral installation of the soft tube 1 between the first clamping body 2 and the second clamping body 3 is ensured, so that the pipe clamp valve is installed and used as a whole component.

[0058] The valve body 8 is provided with a flushing port 81 for connecting a water source, water can flow in the flushing port 81, thereby facilitating the flushing of the pipe clamp valve, especially when there is foreign matter in the soft tube 1, the foreign matter can be removed through flushing, thereby realizing the conduction of the soft tube 1.

[0059] The aforementioned pipe clamp valve using method comprises the following steps: presetting the corresponding motor 4 load threshold P0 when the pipe clamp valve is in the closed state, and the calibrated relative distance L0 of the first clamping body 2 and the second clamping body 3. The P0 and L0 are test results when there is no foreign matter in the soft tube 1 of the pipe clamp valve.

[0060] When the pinch valve is controlled to clamp the hose 1 to perform the pinch valve closing operation, i.e. based on the control of the motor 4, the first clamping body 2 and the second clamping body 3 are driven to move towards each other to clamp the hose 1 under the drive of the transmission mechanism 5, the working parameter of the motor 4 is detected and the corresponding load P of the motor 4 is calculated, and when the load P of the motor 4 reaches the load threshold P0, if there is no foreign matter in the hose 1, the distance between the first clamping body 2 and the second clamping body 3 will be reduced to the calibrated relative distance L0 or below. Based on this, the relative distance L of the first clamping body 2 and the second clamping body 3 is obtained at the same time, and L is compared with the calibrated relative distance L0, if L>L0, i.e. the load of the motor 4 has reached the load at the time of closing of the pinch valve, but the distance between the first clamping body and the second clamping body is greater than the corresponding L0 at the time of closing of the pinch valve, it is judged that there is foreign matter in the hose 1. Based on the judging structure, the processing mode of the foreign matter can be determined based on the different application product environment of the pinch valve.

[0061] In the embodiment, when it is judged that there is foreign matter in the hose 1, water is supplied to the hose 1 from the self-flushing port 81 to flush the hose 1, and then the foreign matter in the hose 1 is discharged, thereby avoiding the situation that the pinch valve cannot be closed or the hose 1 is damaged.

[0062] The foregoing pinch valve and the method for using the pinch valve can be applied to various environments requiring the use of the valve body 8, but in the embodiment, the pinch valve is driven by the motor 4 to clamp the hose 1, the driving power is sufficient, and the clamping demand of the large-diameter hose 1 can be met, and the working demand of the large-diameter hose 1 under the negative pressure condition can be met. In addition, the pinch valve is provided with a signal acquisition circuit for detecting the relative distance of the first clamping body 2 and the second clamping body 3 and for detecting the working parameter of the motor 4, so that the detection of whether the hose 1 can be closed and whether there is foreign matter in the hose 1 can be simply realized based on the comparison of the distance data and the working parameter of the motor 4, the purpose of timely discovering the foreign matter in the hose 1 is achieved, and the user can conveniently perform maintenance treatment.

[0063] The working method of the pinch valve in the embodiment can timely discover the situation that there is foreign matter in the hose 1. On this basis, flushing treatment can be performed to prevent the pinch valve from being unable to be closed or being damaged by the foreign matter.

[0064] As shown in Figure 3 The present application also relates to a cleaning device comprising a base station 100 and a cleaning machine 200.

[0065] The base station 100 is provided with a clean water tank 101, a water pump 102, a sewage tank 103, a fan 104, a first control module 105, and the clamp valve as described above. The water pump 102, the fan 104, and the motor 4, the distance detector 6, and the signal acquisition circuit in the clamp valve are electrically connected to the first control module 105. The water pump 102 is connected between the water outlet of the clean water tank 101 and the flushing port 81 of the clamp valve. The inlet of the sewage tank 103 is connected to the free end of the hose 1. The fan 104 is arranged downstream of the sewage tank 103. The base station 100 is provided with a first docking port 106 that is docked with the valve body 8.

[0066] The cleaning machine 200 is provided with a sewage separation chamber 201 and a second control module 202 that is communicatively connected to the first control module 105. The sewage separation chamber 201 is provided with a water level detector 203 that is electrically connected to the second control module 202. The cleaning machine 200 is provided with a second docking port 204 corresponding to the outlet of the sewage separation chamber 201. The cleaning machine 200 can be moved to the base station 100 so that the second docking port 204 is docked with the first docking port 106.

[0067] The cleaning device performs self-cleaning work by the following steps. Specifically, the steps include: moving the cleaning machine 200 to the base station 100 so that the second docking port 204 is docked with the first docking port 106; controlling the opening of the clamp valve; controlling the water pump 102 to work so that the water in the clean water tank 101 enters the clamp valve through the flushing port 81 and flows into the separation chamber in the cleaning machine 200; detecting the water level information in the separation chamber; when the water level in the separation chamber reaches a preset high water level threshold, controlling the water pump 102 to stop working; controlling the fan 104 to work so that the sewage in the separation chamber is sucked into the sewage tank 103 through the clamp valve, realizing self-cleaning of the separation chamber and the clamp valve; when the water level in the separation chamber reaches a preset low water level threshold, controlling the closing of the clamp valve and the stopping of the fan 104.

[0068] When the clamp valve is controlled to be closed, the working parameters of the motor 4 are detected and the corresponding motor 4 load P is calculated. When the motor 4 load P reaches a load threshold P0, the relative distance L of the first clamping body 2 and the second clamping body 3 is obtained, and L is compared with the calibrated relative distance L0. If L>L0, it is judged that there is foreign matter in the hose 1, otherwise, it is judged that there is no foreign matter in the hose 1. When it is judged that there is foreign matter in the hose 1, the self-cleaning of the clamp valve is performed according to the steps of the self-cleaning work. The cleaning work of the clamp valve is repeatedly performed until it is judged that there is no foreign matter in the hose 1 or a set number of cycles is reached.

[0069] The cleaning device in the present application uses a clamp valve, which can timely detect whether there is foreign matter in the clamp valve, avoiding the situation that the pipeline cannot be closed.

[0070] Directional terms as used in describing the various example structural parts and elements of the application, such as "front", "back", "up", "down", "left", "right", "side", "top", "bottom", and the like are made only for the purpose of convenience in describing the illustrations and are determined based on the example orientation of the illustrations shown in the drawings. Since the embodiments disclosed herein can be positioned in different orientations, these directional terms are used only for the purpose of description and should not be construed as limiting, such as "up", "down" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

Claims

1. A pinch valve comprising a hose (1); a first clamping body (2) arranged on one side of the hose (1); a second clamping body (3) arranged on the other side of the hose (1) relative to the first clamping body (2); characterized in that further comprising a motor (4); a transmission mechanism (5) in driving connection with the motor (4), the first clamping body (2) and the second clamping body (3) respectively, and driving the first clamping body (2) and the second clamping body (3) to relatively approach and squeeze the hose (1) or relatively separate and release the hose (1) under the driving of the motor (4); a distance detector (6) for detecting the relative distance between the first clamping body (2) and the second clamping body (3); a signal acquisition circuit electrically connected with the motor (4) for detecting the working parameter of the motor (4); a preset load threshold P0 of the motor (4) corresponding to the closed state of the pinch valve, and a calibrated relative distance L0 of the first clamping body (2) and the second clamping body (3); when the pinch valve is controlled to clamp the hose (1) to perform the pinch valve closing action, the working parameter of the motor (4) is detected and acquired, and the load P of the motor (4) is calculated, when the load P of the motor (4) reaches the load threshold P0, the relative distance L of the first clamping body (2) and the second clamping body (3) at present is acquired, and L is compared with the calibrated relative distance L0, if L>L0, it is judged that there is a foreign matter in the hose (1).

2. The clamp valve of claim 1, wherein: The transmission mechanism (5) comprises a gear (51) connected to the driving end of the motor (4), and a first rack (52) and a second rack (53) oppositely arranged on both sides of the gear (51) and in meshing connection with the gear (51), the first rack (52) is connected with the first clamping body (2), and the second rack (53) is connected with the second clamping body (3).

3. The clamp valve of claim 2, wherein: The distance detector (6) comprises a first distance sensor (61) and a second distance sensor (62) oppositely and intervally arranged along the clamping direction, the first distance sensor (61) is connected with the first rack (52), and the second distance sensor (62) is connected with the second rack (53).

4. The clamp valve of claim 2, wherein: Further comprising a mounting seat (7), the motor (4) and the transmission mechanism (5) are arranged on the mounting seat (7), and the first rack (52) and the second rack (53) are movably constrained on the mounting seat (7) along the clamping direction.

5. The clamp valve of claim 4, wherein: The first rack (52) is formed on the first frame body (521), and the first clamping body (2) is connected to the end of the first frame body (521) through a connecting rod (522). The second rack (53) is formed on the second frame body (531), and the second clamping body (3) is connected to the end of the second frame body (531).

6. The pinch valve of claim 1, wherein: The hose (1) is provided with a first buffer piece (11) corresponding to the clamping position of the first clamping body (2), and the first buffer piece (11) is provided with a rod body (111) penetrating into the first clamping body (2) along the clamping direction. The hose (1) is provided with a second buffer plate (12) corresponding to the clamping position of the second clamping body (3), and the second buffer plate (12) is connected to the second clamping body (3).

7. The pinch valve of any one of claims 1 to 6, wherein: It also includes a hollow valve body (8), the hose (1) is connected to the valve body (8), and the valve body (8) is provided with a flushing port (81) for connecting to a water source.

8. A method of using a pinch valve, characterized by: The clamp valve as described in any one of claims 1 to 7 is used; The method of using a pinch valve includes the following steps: When the preset clamp valve is in the closed state, the corresponding motor (4) load threshold P0, and the calibrated relative distance L0 between the first clamp (2) and the second clamp (3); When the control clamp valve clamps the hose (1) and performs the clamp valve closing action, the working parameters of the motor (4) are detected and the corresponding motor (4) load P is calculated. When the motor (4) load P reaches the load threshold P0, the relative distance L between the first clamping body (2) and the second clamping body (3) is obtained. L is compared with the calibrated relative distance L0. If L > L0, it is determined that there is a foreign object in the hose (1).

9. The method of using a pinch valve of claim 8, wherein: The clamp valve also includes a hollow valve body (8), a hose (1) connected to the valve body (8), and a flushing port (81) for connecting to a water source is provided on the valve body (8); When it is determined that there is a foreign object in the hose (1), water is supplied into the hose (1) from the flushing port (81) to flush the hose (1).

10. A cleaning device characterized by: Includes base stations (100) and cleaning machines (200); The base station (100) is equipped with a clean water tank (101), a water pump (102), a sewage tank (103), a fan (104), a first control module (105), and a clamp valve as described in claim 7. The motor (4), distance detector (6), and signal acquisition circuit in the water pump (102), fan (104), and clamp valve are all electrically connected to the first control module (105). The water pump (102) is connected between the outlet of the clean water tank (101) and the flushing port (81) of the clamp valve. The inlet of the sewage tank (103) is connected to the free end of the hose (1). The blower (104) is located downstream of the sewage tank (103). The base station (100) is provided with the first pair of interfaces (106) that are connected to the valve body (8). The cleaning machine (200) is provided with a dirt separation chamber (201) and a second control module (202), and the second control module (202) is communicatively connected to the first control module (105); The waste separation chamber (201) is equipped with a water level detector (203) that is electrically connected to the second control module (202). The cleaning machine (200) is equipped with a second pair of interfaces (204) corresponding to the outlet of the waste separation chamber (201). The cleaning machine (200) can be moved to the base station (100) so that the second pair of interfaces (204) can be connected to the first pair of interfaces (106).

11. The cleaning device of claim 10, wherein: The self-cleaning process is performed using the following steps; The cleaning machine (200) moves to the base station (100) so that the second pair of interfaces (204) are connected to the first pair of interfaces (106); The control opens the pinch valve, controls the water pump (102) to work to make the water in the clean water tank (101) enter the pinch valve through the flushing port (81) and flow into the separation chamber in the cleaning machine (200); the water level information in the separation chamber is detected, and when the water level in the separation chamber reaches the preset high water level threshold, the water pump (102) stops working; the fan (104) is controlled to work to suck the sewage in the separation chamber to the sewage tank (103) through the pinch valve, so that the separation chamber and the pinch valve are self-cleaned; when the water level in the separation chamber reaches the preset low water level threshold, the pinch valve is controlled to be closed, and the fan (104) is controlled to stop working.

12. The cleaning device of claim 11, wherein: When the pinch valve is controlled to be closed, the working parameters of the motor (4) are detected and the corresponding motor (4) load P is calculated, and when the motor (4) load P reaches the load threshold P0, the relative distance L of the first clamping body (2) and the second clamping body (3) is obtained, and L is compared with the calibrated relative distance L0, if L>L0, it is judged that there is foreign matter in the hose (1).

13. The cleaning device of claim 12, wherein: When it is judged that there is foreign matter in the hose (1), the self-cleaning of the pinch valve is carried out according to the steps of the self-cleaning work.

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