PIPE

Abstract

A pump is disclosed, comprising a pump body and an indicator light assembly. The pump body is provided with an inner cavity and a liquid inlet and a liquid outlet. The liquid inlet and liquid outlet are connected to the inner cavity. The pump body is provided with a movable element in the inner cavity, and the movable element can be moved within the inner cavity, such that a liquid to be pumped is pumped from the liquid inlet to the liquid outlet.The indicator light assembly comprises an indicator light and a power supply assembly. The indicator light is mounted on the pump body, and the power supply assembly is connected to the moving element. When the moving element moves within the internal cavity, it actuates the power supply assembly to switch the indicator light on or alternately on and off, so that the indicator light is either always on or flashing. Depending on the pump in the technical solution, the moving element actuates the power supply assembly to switch the indicator light on or alternately on and off, allowing the pump's operating status to be determined visually, and thus enabling the operator to observe the pump remotely.

Description

Bomb TECHNICAL FIELD The present invention is used in the technical field of pumps, and in particular relates to a pump. BACKGROUND In current technology, when an oil drum is being pumped by a pneumatic oil suction pump, a worker can only determine if the pump is functioning normally by listening to the sound. If the oil drum is located far away, the worker cannot hear the pump due to the distance, making it impossible to determine the pump's operating status and obtain real-time information. If the pump fails or suddenly stops, the worker cannot locate and resolve the problem in time, significantly impacting work progress. US Patent 9243626B2 discloses that an adhesive dispensing system includes a pump and at least one sensor positioned to detect the movement of a pump component and generate signals based on the detected movements. The dispensing system also includes a controller that drives the pump and communicates with at least one sensor to collect information regarding the pump's operating cycles based on the signals. As a result, one or more diagnostic processes are enabled in the controller during the operation of the adhesive dispensing system. These diagnostic processes may include a leak rate test for the dispensing system, an overspeed detection test for the pump, and monitoring of the expected life cycle of the pump or other components. While the aforementioned patent application may achieve its intended purpose, a need for a new and improved pump remains. SUMMARY The present invention aims to solve at least one of the technical problems of existing technology, and to provide a pump, in which a moving element drives a power supply assembly to turn on or alternately turn on and off an indicator light, the operating status of the pump can be determined visually, and thus the worker can observe the pump from a distance. The technical solutions used in the present invention to solve the technical problems are as follows. A bomb comprises: a pump body, wherein the pump body is provided with an inner cavity, and a liquid inlet and a liquid outlet that are communicated with the inner cavity, the pump body is provided with a movable element in the inner cavity, and the movable element can be moved in the inner cavity, to pump a liquid that is to be pumped from the liquid inlet to the liquid outlet; and an indicator light assembly, wherein the indicator light assembly comprises an indicator light and a power supply assembly, the indicator light being mounted on the pump body, and when the moving element moves in the inner cavity, the moving element is able to actuate the power supply assembly to turn on or alternately turn on and off the indicator light, so that the indicator light is always on or flashing. In some embodiments of the present invention, the power supply assembly comprises a coil assembly and a magnetic component. The coil assembly is mounted in the pump body and provided with a movable cavity communicating with the inner cavity. One end of the coil assembly away from the movable element is connected to the indicator light. The magnetic component is connected to the movable element and extends within the movable cavity. The movable element is capable of driving the magnetic component to rotate in the movable cavity or reciprocate along the movable cavity. In some embodiments of the present invention, the indicator light assembly further comprises a mounting sleeve, the pump body is provided with a mounting hole communicating with the inner cavity, the mounting sleeve is mounted on the pump body through the mounting hole, an interior of the mounting sleeve is communicated with the inner cavity, the indicator light and the coil assembly are both arranged in the mounting sleeve, and the moving element is connected to the magnetic component via a connecting shaft. In some embodiments of the present invention, the mounting sleeve comprises a straight mounting sleeve and a stepped mounting sleeve that are detachably connected. The mounting sleeve is in a sealing fit with the mounting hole through the stepped mounting sleeve. A first mounting cavity is formed inside the stepped mounting sleeve, and a second mounting cavity is formed inside the straight mounting sleeve. The second mounting cavity communicates with the inner cavity through the first mounting cavity. The indicator light and coil assembly are both located in the second mounting cavity, and the connecting shaft coincides with the first mounting cavity. In some embodiments of the present invention, the stepped mounting sleeve is provided with a first matching surface extending in a radial direction and a second matching surface extending in an axial direction in a sealing fit position with the mounting hole, an inner wall surface of the mounting hole abuts against the second matching surface, an outer end surface of the mounting hole abuts against the first matching surface, and the straight mounting sleeve is encased on an outside of the stepped mounting sleeve and abuts against the outer end surface of the mounting hole. In some embodiments of the present invention, the coil assembly comprises a coil mounting bracket and a coil. The coil mounting bracket aligns with the straight mounting sleeve and abuts against the stepped mounting sleeve. The coil mounting bracket has a through-hole extending axially from the straight mounting sleeve. A wire groove is formed on a periphery of the coil mounting bracket. The coil is wound in the wire groove. The indicator light is embedded in the through-hole via a mounting seat. The coil mounting bracket has a movable cavity at one end of the mounting seat near the magnetic component. The mounting seat has a vent cavity communicating with the through-hole and the second mounting cavity. The mounting sleeve has a vent hole, and the through-hole...The ventilation cavity, the second mounting cavity, and the ventilation hole are connected sequentially. In some embodiments of the present invention, a first sealing ring is arranged between the stepped mounting sleeve and an inner wall surface of the mounting hole, a second sealing ring is arranged between the stepped mounting sleeve and the connecting shaft, and an adjusting gasket is arranged between the coil mounting bracket and the stepped mounting sleeve. In some embodiments of the present invention, the straight mounting sleeve is provided with a light diffuser cover on the top of the indicator light, and the light diffuser cover is detachably connected to the straight mounting sleeve. In some embodiments of the present invention, a friction bushing is also provided between the stepped mounting sleeve and the connecting shaft; one end of the connecting shaft near the indicator light is provided with a mounting groove; the connecting shaft is threaded to a magnetic conductor connector in the mounting groove; the magnetic component is arranged in the mounting groove and located at one end of the magnetic conductor connector near the indicator light; and the magnetic component is magnetically connected to the magnetic conductor connector. In some embodiments of the present invention, the pump further comprises an information recording module and a signal transmission module, wherein a display element is arranged on the outside of the mounting sleeve, the information recording module is electrically connected to the display element, and the signal transmission module is electrically connected to the information recording module and configured for wireless / wired connection with an external signal receiving terminal. One of the above technical solutions presents at least one of the following advantages or beneficial effects: depending on the pump of the technical solution, the power supply assembly is driven to move by the movement of the moving element in the pump body during operation, so that the power supply assembly is driven by the moving element to switch on or alternately switch on and off the indicator light, and the indicator light is always on in the on state and flashes in the alternate on and off state, to visually determine whether the moving element is working, thus directly determining whether the pump is in a normal operating state or not, satisfying the requirement to determine the operating state of the pump remotely, facilitating the worker's understanding of the equipment's operating information in real time,and ensuring trouble-free operation. BRIEF DESCRIPTION OF THE DRAWINGS The present invention is described in more detail below with reference to the drawings. Figure 1 is a schematic diagram of an assembly of an embodiment of the present invention; Figure 2 is a top view of an embodiment of the present invention; Figure 3 is a cross-sectional view of part AA of Figure 2; Figure 4 is a cross-sectional view of part BB of Figure 2; Figure 5 is a cross-sectional view of the connection between a reverse gear and an indicator light assembly according to an embodiment of the present invention; and Figure 6 is a schematic structural diagram of a stepped mounting sleeve of an embodiment of the present invention. DETAILED DESCRIPTION The specific embodiments of the present invention will be described in detail in this part; the preferred embodiments of the present invention are shown in the drawings, and the drawings are intended to supplement the description in the written part of the descriptive memorandum, so that people can visually and vividly understand each technical feature and the overall technical solution of the present invention, but these embodiments should not be understood as a limitation to the scope of protection of the present invention. In the present invention, if directions are described (up, down, left, right, front, and back), it is solely for the convenience of describing the technical solutions of the present invention and is not intended to indicate or imply that the described technical feature must have a specific orientation and be constructed and operated in a specific orientation. Therefore, the described orientation shall not be construed as limiting the scope of the present invention. In the present invention, the meaning of "several" refers to being one or more, and the meaning of "multiple" refers to being more than two. The meanings of "greater than," "less than," "more than," etc., are understood to exclude this number, while the meanings of "above," "below," "within," etc., are understood to include this number. In the description of the present invention, if there are descriptions of "first" and "second," it is only for the purpose of distinguishing technical features, and they shall not be understood to indicate or imply relative importance, the number of technical features stated, or the order of the technical features stated. In the present invention, the terms "arrangement," "installation," "connection," etc., shall be understood in a broad sense unless specifically defined otherwise. For example, they may be a direct connection or an indirect connection through an intermediate means; they may be a fixed connection, a detachable connection, or an integrated connection; they may be a mechanical connection or an electrical connection, or have the capacity for mutual communication; and they may refer to communication between two elements, or an interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the foregoing terms in the present invention in conjunction with the specific contents of the technical solutions. With reference to Figures 1 to 4, an embodiment of the present invention provides a pump, comprising a pump body and an indicator light assembly 5, wherein the pump body 1 is provided with an inner cavity 11, and a liquid inlet 13 and a liquid outlet 14 communicating with the inner cavity 11, the pump body 1 is provided with a movable element 12 in the inner cavity 11, and the movable element 12 can be moved in the inner cavity 11, to pump a liquid to be pumped (such as oil) from the liquid inlet 13 to the liquid outlet 14. With reference to Figure 5, the indicator light assembly 5 comprises an indicator light 21 and a power supply assembly (not shown in the drawings), and the indicator light 21 is mounted in the pump body 1. When the moving element 12 moves in the inner cavity 11, the moving element 12 is able to actuate the power supply assembly to switch the indicator light 21 on or alternately on and off, so that the indicator light 21 is either always on or flashing. That is, when the moving element 12 moves in the inner cavity 11 and is able to actuate the power supply assembly to switch the indicator light 21 on, the indicator light 21 is normally on; and when the moving element 12 moves in the inner cavity 11 and is able to actuate the power supply assembly to alternately switch the indicator light 21 on and off, the indicator light 21 is in a flashing state. According to the technical solution, the power supply assembly is driven to move by the movement of the moving element 12 in the pump body 1 during operation. The power supply assembly is driven by the moving element 12 to turn on, or alternately turn on and off, the indicator light 21. The indicator light 21 is always on in the on state and flashes in the alternating on and off states, allowing visual determination of whether the moving element 12 is working. This directly and accurately determines whether the pump is in a normal operating state, fulfilling the requirement to remotely determine the pump's operating status, facilitating real-time access to pump operating information for the operator, and ensuring trouble-free operation. It can be understood that the power supply assembly can provide energy to the indicator light 21 by magnetic generation, and the moving element 12 drives the magnetic component 22, such as a bar magnet or a magnet, in rotation or linear motion, so that a coil-cut magnetic field is electrically energized. The power supply assembly can also be a button cell battery, a lithium battery, or a dry cell battery for supplying energy to the indicator light 21. A circuit and a contact switch are arranged in the button cell battery, lithium battery, or dry cell battery, such that the moving element 12 touches or remains clear of the contact switch during rotation or reciprocating motion, to activate or deactivate the switch, thereby causing the power supply assembly to turn on, or alternately turn on and off, the indicator light 21. Specifically, the power supply assembly can be reasonably adjusted according to the pump type. For example, with reference to Figure 1, Figure 3, Figure 4, and Figure 5, when the pump is a pneumatic oil suction pump and the moving element 12 comprises a piston, the pump body 1 comprises a cylindrical body 151, an oil suction pipe 152 in a lower part of the cylindrical body 151, and a reversing gear 153 in an upper part of the cylindrical body 151. A chamber of the cylindrical body 151 is connected to a chamber of the reversing gear 153 to form the inner cavity 11. The piston is slidably mounted in the cylindrical body 151, the chamber of the cylindrical body 151 is divided into a first chamber and a second chamber, and the indicator light assembly 5 is mounted on an upper part of the reversing gear 153.A lower portion of the oil suction pipe 152 is equipped with a liquid inlet, and a side edge of an upper portion of the oil suction pipe 152 is equipped with a liquid outlet. When gas is introduced into the reversing gear 153, the reversing gear 153 can change the direction of gas flow, directing the gas into either the first or second chamber of the cylindrical body 151. This changes the direction of movement of the piston within the cylindrical body 151, thereby achieving the reciprocating up-and-down motion of the piston and completing the oil suction and discharge cycles in the oil suction pipe 152. Since the principle of oil suction for the pneumatic oil suction pump is well-known to those skilled in the art, this document only explains the implementation principle of the power supply assembly. Specifically, when the power supply assembly uses magnetic generation, the piston drives the magnetic element 22, such as a magnet bar or magnet, to move linearly via the connecting shaft 25 attached to the top of the piston and through the reversing gear 153 during the up-and-down reciprocating motion. This causes the coil electrically connected to the indicator light 21 to be cut off by the magnetic field, resulting in continuous ignition. Alternatively, when the power supply assembly uses battery power, such as from a button cell or lithium battery, the piston touches or moves away from the contact switch during the linear reciprocating motion to achieve alternating on / off operation. When the pump is a centrifugal pump or a self-priming pump, the moving element 12 comprises an impeller and a drive shaft in transmission connection with the impeller.In the case where the drive shaft is driven in rotation by a motor to drive the impeller, when the power supply assembly adopts magnetic generation, the drive shaft directly drives the magnetic element 22 (such as the magnetic bar or magnet) in rotation, the coil electrically connected to the indicator light 21 is cut by the magnetic field to achieve continuous ignition; alternatively, when the power supply assembly adopts the power supply by batteries (such as the button battery or lithium battery), the drive shaft is provided with a structure (such as a cam), so that the drive shaft drives the cam to make contact with or stay away from the contact switch during rotation to achieve alternating ignition and shutdown.Furthermore, a specific connection mode between the power supply assembly and the moving element 12 may be changed according to an actual situation, which will not be specifically limited in this document. With reference to Figure 5, in some embodiments, the power supply assembly comprises a coil assembly 23 and a magnetic component 22. The coil assembly 23 is mounted in the pump body 1 and is provided with a movable cavity 233 communicating with the inner cavity 11. One end of the coil assembly 23, far from the movable element 12, is connected to the indicator light 21. The movable element 12 is connected to the magnetic component 22. The magnetic component 22 extends within the movable cavity 233, and the movable element 12 is capable of driving the magnetic component 22 to rotate within the movable cavity 233 or to reciprocate along the movable cavity 233.The coil is cut by the magnetic field to generate electrical energy, causing indicator light 21 to illuminate. Whether the moving element 12 is functioning can be directly determined by observing the operating status of indicator light 21, thus accurately confirming the pump's operation. This power supply assembly does not require an external power source, saving energy and being environmentally friendly, while also simplifying direct pump mounting and reducing assembly complexity. Furthermore, with reference to Figure 5, the indicator light assembly 5 further comprises a mounting sleeve 24. The pump body 1 is provided with a mounting hole (not shown in the drawings) communicating with the inner cavity 11, and the mounting sleeve 24 is mounted to the pump body 1 through the mounting hole. An interior of the mounting sleeve 24 is in communication with the inner cavity 11, and both the indicator light 21 and the coil assembly 23 are arranged within the mounting sleeve 24, thereby providing protection for the indicator light 21. The movable element 12 is connected to the magnetic component 22 via a connecting shaft 25, ensuring that the magnetic component 22 can extend within the movable cavity 233 and rotate or move linearly. Furthermore, with reference to Figure 5 and Figure 6, the mounting sleeve 24 comprises a straight mounting sleeve 241 and a stepped mounting sleeve 242 that are detachably connectable, and the mounting sleeve 24 is in a sealing fit with the mounting hole through the stepped mounting sleeve 242. A first mounting cavity 2421 is formed inside the stepped mounting sleeve 242, a second mounting cavity 2411 is formed inside the straight mounting sleeve 241, and the second mounting cavity 2411 communicates with the inner cavity 11 through the first mounting cavity 2421. Both the indicator light 21 and the coil assembly 23 are located in the second mounting cavity 2411, and the connecting shaft 25 is coupled to the first mounting cavity 2421 and detachably connected to the magnetic component 22. The magnetic component 22 can be replaced by removing the straight mounting sleeve 241, which facilitates disassembly. It may be understood that the straight mounting sleeve 241 and the stepped mounting sleeve 242 can be detachably connected by means of a threaded connection or a clamp connection, which will not be specifically limited herein. Furthermore, with reference to Figure 5 and Figure 6, in a sealing fit position with the mounting hole, the stepped mounting sleeve 242 has a first mating surface 2422 extending radially and a second mating surface 2423 extending axially. An inner wall surface of the mounting hole abuts the second mating surface 2423, and an outer end surface of the mounting hole abuts the first mating surface 2422, so that the stepped mounting sleeve 242 is in a sealing fit with the pump body 1. The straight mounting sleeve 241 is sleeved on the outside of the stepped mounting sleeve 242 and abuts the outer end surface of the mounting hole, so that the straight mounting sleeve 241 is securely mounted. With reference to Figure 5, in some embodiments, the coil assembly 23 comprises a coil mounting bracket 231 and a coil 232, and the coil mounting bracket 231 engages with the straight mounting sleeve 241 and abuts against the stepped mounting sleeve 242. The coil mounting bracket 231 is provided with a through hole (not shown in the drawings) extending in an axial direction of the straight mounting sleeve 241, a wire groove (not shown in the drawings) is formed on a periphery of the coil mounting bracket 231, and the coil 232 is wound in the wire groove. The indicator light 21 is embedded in the through-hole via a mounting seat 26. The coil mounting bracket 231 has a movable cavity 233 at one end of the mounting seat 26, near the magnetic component 22. The mounting seat 26 has a vent cavity 261 that communicates with the through-hole and the second mounting cavity 2411, and the mounting sleeve 24 has a vent hole 243 that communicates with the external environment. The through-hole, the vent cavity 261, the second mounting cavity 2411, and the vent hole 243 are connected sequentially to prevent the interior of the indicator light assembly 5 from generating positive and negative pressures due to the movement of the magnetic component 22, thus ensuring the normal operation of the indicator light 21. Furthermore, with reference to Figure 5, a first sealing ring 31 is arranged between the stepped mounting sleeve 242 and an inner wall surface of the mounting hole, and a second sealing ring 32 is arranged between the stepped mounting sleeve 242 and the connecting shaft 25, to ensure a sealing fit between the pump body 1 and the indicator light assembly 5. An adjustment gasket 33 is arranged between the coil mounting bracket 231 and the stepped mounting sleeve 242, to ensure that the coil mounting bracket 231 can abut against the stepped mounting sleeve 242, thereby fulfilling the mounting requirement of the coil assembly 23. It can be understood that the indicator light assembly 5 can change a color of the indicator light assembly 5 by replacing the indicator lights 21 with different colors or by mounting different light diffuser covers 4. With reference to Figure 1 and Figure 5, in some embodiments, the straight mounting sleeve 241 is provided with a light diffuser cover 4 on a top part of the indicator light 21, and the light diffuser cover 4 is detachably connected to the straight mounting sleeve 241, which facilitates the mounting of different light diffuser covers 4, so that the indicator light assembly 5 can emit light with corresponding colors.Different types of light diffuser covers 4 are mounted on pumps used to pump different petroleum products, and the worker can remotely identify which pump is in an operating state through the color shown by the indicator light assembly 5, which is convenient and practical. With reference to Figure 5, in some embodiments, a friction bushing 34 is also arranged between the stepped mounting sleeve 242 and the connecting shaft 25, which plays a guiding role and can reduce friction between the connecting shaft 25 and the stepped mounting sleeve 242, to reduce wear on the indicator light assembly 5. One end of the connecting shaft 25 near the indicator light 21 is provided with a mounting slot 251, and the connecting shaft 25 is threaded into the mounting slot 251 to connect to a magnetic conductor connector 252. The magnetic component 22 is arranged in the mounting slot 251 and located at one end of the magnetic conductor connector 252 near the indicator light 21. The magnetic component 22 is magnetically connected to the magnetic conductor connector 252, thereby stably mounting it and facilitating its removal and assembly. The magnetic conductor connector 252 may be understood to include a magnetic conductor flat-head bolt or screw, which is not specifically limited herein. Furthermore, with reference to Figure 1, Figure 4, and Figure 5, the pump further comprises an information recording module (not shown in the drawing) and a signal transmission module (not shown in the drawing), wherein the information recording module is used to acquire an operating frequency of the pump, and a total amount of oil pumping and other information are calculated by calculating a single amount of oil pumping and recording a pump operating duration. A display element 6 is arranged on the outside of the mounting sleeve 24, and the information logging module is electrically connected to the display element 6 to show pump operating information, which is convenient for the operator. The information logging module comprises a circuit board and a chip mounted on the circuit board. One connection end of the chip can be electrically connected to an A / D converter, and one output end of the A / D converter is electrically connected to the display element 6 via a single-chip microcomputer to display the corresponding information. It can also be understood that the information logging module (not shown in the drawings), the signal transmission module, and the display element 6 are fully integrated on the outside of the mounting sleeve 24, simplifying the assembly process. The signal transmission module is electrically connected to the information recording module and configured for wireless / wired connection with an external signal receiving terminal, such as a computer terminal or PC terminal.The signal transmission module can be understood to comprise a USB interface and / or a wireless transmission module, where the wireless transmission module is mounted on the motherboard, the wireless connection with the external signal receiving end can be made through the wireless transmission module, and the wired connection with the external signal receiving end can be made through the USB interface, to perform remote transmission of pump operating information, thus making it convenient for the worker to perform data statistics and printing and other operations through the external signal receiving end, such as the computer end, and facilitating use. In the descriptions in the specification, references to terms such as "example," "embodiment," "some embodiments," etc., mean that the specific features, structures, or characteristics described in this embodiment or example may be included in at least one embodiment or example of the present invention. In the specification, a schematic representation of the foregoing terms does not necessarily signify the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in one or more embodiments or examples in a suitable manner. The present invention is not limited to prior embodiments. Those skilled in the art may make various equivalent modifications or substitutions without compromising the essence of the present invention, and these modifications or equivalent substitutions are within the scope defined by the claims of this application.

Claims

1. A pump, comprising: a pump body, wherein the pump body comprises a cylindrical body, an oil suction pipe in a lower portion of the cylindrical body, and a reversing gear in an upper portion of the cylindrical body, wherein a chamber of the cylindrical body is connected to a chamber of the reversing gear to form an inner cavity, wherein the pump body is provided with a movable element in the inner cavity, and the movable element is slidably mounted in the cylindrical body so that it can move in the inner cavity, and the chamber of the cylindrical body is divided into a first chamber and a second chamber, wherein a lower portion of the oil suction pipe is provided with a liquid inlet, and a side edge of an upper portion of the oil suction pipe is provided with a liquid outlet; and an indicator light assembly,wherein the indicator light assembly comprises an indicator light and a power supply assembly, the indicator light is mounted on the pump body, and when the moving element moves in the inner cavity, the moving element is able to actuate the power supply assembly to turn the indicator light on or alternately turn it on and off, so that the indicator light is always on or flashing, wherein when gas is introduced into the reversing gear, the reversing gear can change the direction of gas flow, so that the gas enters the first chamber or the second chamber of the cylindrical body, to change the direction of movement of the piston in the cylindrical body, thereby performing the reciprocating up-and-down movement of the piston, and causing the oil suction pipe to complete the oil suction and oil discharge.so that a liquid to be pumped is pumped from the liquid inlet to the liquid outlet; and the power supply assembly comprises a coil assembly and a magnetic component, the moving element being connected to the magnetic component by means of a connecting shaft, wherein the coil assembly is mounted in the pump body and is provided with a movable cavity communicating with the inner cavity, one end of the coil assembly distant from the moving element is connected to the indicator light, the magnetic component is connected to the moving element and extends within the movable cavity, and the movable element is capable of driving the magnetic component to rotate within the movable cavity or to move reciprocally along the movable cavity.

2. Pump according to claim 1, wherein the indicator light assembly further comprises a mounting sleeve,The pump body is provided with a mounting hole communicating with the inner cavity; the mounting sleeve is mounted to the pump body through the mounting hole; an interior of the mounting sleeve is in communication with the inner cavity; and the indicator light and coil assembly are both arranged in the mounting sleeve.

3. Pump according to claim 2, wherein the mounting sleeve comprises a straight mounting sleeve and a stepped mounting sleeve having a detachable connection capability; the mounting sleeve is in a sealing fit with the mounting hole through the stepped mounting sleeve; a first mounting cavity is formed in an interior of the stepped mounting sleeve; a second mounting cavity is formed in an interior of the straight mounting sleeve; the second mounting cavity is in communication with the inner cavity through the first mounting cavity.The indicator light and the coil assembly are both located in the second mounting cavity, and the connecting shaft is coincident with the first mounting cavity.

4. Pump according to claim 3, wherein the stepped mounting sleeve is provided with a first mating surface extending radially and a second mating surface extending axially in a sealing fit position with the mounting hole, an inner wall surface of the mounting hole abuts against the second mating surface, an outer end surface of the mounting hole abuts against the first mating surface, and the straight mounting sleeve is sleeved on the outside of the stepped mounting sleeve and abuts against the outer end surface of the mounting hole.

5. Pump according to claim 4,wherein the coil assembly comprises a coil mounting bracket and a coil, the coil mounting bracket engages with the straight mounting sleeve and abuts against the stepped mounting sleeve, the coil mounting bracket is provided with a through hole extending in an axial direction of the straight mounting sleeve, a wire groove is formed on a periphery of the coil mounting bracket, the coil is wound in the wire groove, the indicator light is embedded in the through hole via a mounting seat, the coil mounting bracket is provided with a movable cavity at one end of the mounting seat near the magnetic component, the mounting seat is provided with a vent cavity communicating with the through hole and the second mounting cavity, the mounting sleeve is provided with a vent hole, and the through hole, the vent cavity,The second mounting cavity and the vent hole are sequentially connected.

6. Pump according to claim 5, wherein a first sealing ring is arranged between the stepped mounting sleeve and an inner wall surface of the mounting hole, a second sealing ring is arranged between the stepped mounting sleeve and the connecting shaft, and an adjusting gasket is arranged between the coil mounting bracket and the stepped mounting sleeve.

7. Pump according to claim 3, wherein the straight mounting sleeve is provided with a light-diffusing cover on a portion of the indicator light, and the light-diffusing cover is detachably connected to the straight mounting sleeve.

8. Pump according to claim 3, wherein a guide belt is also arranged between the stepped mounting sleeve and the connecting shaft.One end of the connecting shaft near the indicator light is provided with a mounting slot; the connecting shaft is threaded into the mounting slot to a magnetic conductor connector; the magnetic component is arranged in the mounting slot and located at one end of the magnetic conductor connector near the indicator light; and the magnetic component is magnetically connected to the magnetic conductor connector.

9. Pump according to claim 2, further comprising an information recording module and a signal transmission module, wherein a display element is arranged on the outside of the mounting sleeve; the information recording module is electrically connected to the display element; and the signal transmission module is electrically connected to the information recording module and configured for a wireless / wired connection to an external signal receiving terminal.

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