Anti-loosening detection device for oil nozzle of electromagnetic pump

Abstract

The utility model relates to the technical field of electromagnetic pumps, in particular to an electromagnetic pump oil nozzle anti-loosening detection device. A vertical partition plate is arranged on the rear side of a rectangular hole in the middle of the top surface of an inner cavity of an outer box body; the oil nozzle clamping mechanism arranged in the middle of the inner cavity of the outer box body is used for clamping and fixing an oil nozzle of the electromagnetic pump to be tested; the torque detection mechanism comprises a bottom fixing plate fixed to the top end of the vertical partition plate, a gear with the bottom of a center shaft rotationally sleeving the bottom fixing plate, a torque sensor with the bottom end of a rotor fixedly sleeving the center of the gear, an outer gear ring meshed with the gear, and a power mechanism driving the top end of the rotor of the torque sensor to rotate. The pump body clamping mechanism comprises a swing plate fixedly connected with the bottom face of the outer gear ring, a through hole is formed in the position, right opposite to a center cavity of the outer gear ring, of the swing plate, and a mechanism which moves horizontally relative to the swing plate to clamp the electromagnetic pump body to be tested is arranged on the top face of the swing plate. The problems that the anti-loosening detection work of the oil nozzle of the electromagnetic pump consumes much manpower and is not high in efficiency are well solved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic pump technology, specifically to an electromagnetic pump nozzle anti-loosening detection device. Background Technology

[0002] A plunger-type electromagnetic pump is a fluid transfer device that combines electromagnetic drive with the structure of a plunger pump. During operation, an electromagnetic coil is energized to generate a magnetic field, which drives an iron plunger to reciprocate within the pump body, achieving the intake and discharge of liquid. This type of electromagnetic pump is compact, small, and offers high and stable flow accuracy, making it suitable for metering applications.

[0003] A commonly used plunger-type electromagnetic pump mainly consists of an electromagnetic drive unit, an inlet end, and an outlet end. The electromagnetic drive unit primarily includes a housing, coil support, electromagnetic coil, plunger, guide rail, and return spring. The inlet and outlet ends each include a nozzle support and a nozzle, respectively. The nozzle and nozzle support are assembled and connected via a sleeve connection. To ensure that the nozzles in the electromagnetic pump have sufficient torsional resistance after leaving the factory, and to prevent nozzle loosening during use, an anti-loosening test is performed on the nozzles before the pump leaves the factory.

[0004] Traditionally, when testing the oil nozzle of an electromagnetic pump for looseness, the electromagnetic pump is first clamped and secured manually, and then a torque wrench is used to clamp the oil nozzle for testing. This testing method is not only inconvenient and labor-intensive, but also inefficient. Utility Model Content

[0005] The purpose of this utility model is to provide an electromagnetic pump nozzle anti-loosening detection device to solve the problem that the existing electromagnetic pump nozzle anti-loosening detection work is labor-intensive and inefficient.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-loosening detection device for an electromagnetic pump nozzle, wherein a rectangular opening is provided in the middle of the top surface of the outer casing, and a vertical partition is provided in the inner cavity of the outer casing at the position behind the rectangular opening; a nozzle clamping mechanism is provided in the middle of the inner cavity of the outer casing and is used to clamp and fix the nozzle of the electromagnetic pump under test; a torque detection mechanism includes a bottom fixing plate fixed to the top of the front wall of the vertical partition, a gear rotatably sleeved on the bottom of the central shaft and mounted on the bottom fixing plate, a torque sensor fixedly mounted on the center of the gear at the bottom of the rotor, an external gear ring meshing with the gear, and a power mechanism for driving the top of the rotor of the torque sensor to rotate; a pump body clamping mechanism includes a swing plate located above the nozzle clamping mechanism and fixedly connected to the bottom surface of the external gear ring, the swing plate having a through hole at the position opposite the central cavity of the external gear ring, and the top surface of the swing plate having a mechanism for relatively horizontal movement to clamp the pump body of the electromagnetic pump under test.

[0007] Preferably, the top surface of the vertical partition plate is fixedly connected in pairs with slot blocks that match the rotational engagement of the swing plate.

[0008] Preferably, the nozzle clamping mechanism includes a fixed slot fixedly connected to the front wall of the vertical partition near the top, a fixed clamping plate fixed to the front wall of the vertical partition and located on the upper side of the rear end of the fixed slot, a guide rod fixedly sleeved to the front wall of the fixed clamping plate, a movable clamping plate slidably sleeved on the guide rod, a spring connecting the fixed clamping plate and the movable clamping plate, a swing arm hinged to the front end of the fixed slot near the top and located in front of the movable clamping plate, a telescopic cylinder one fixed to the bottom of the rear wall of the vertical partition and with its piston rod passing through the vertical partition, and a rectangular frame fixed to the front end of the piston rod of the telescopic cylinder one and with its inner cavity movably sleeved with the bottom of the swing arm. The middle part of the front wall of the fixed clamping plate and the middle part of the rear wall of the movable clamping plate are respectively provided with an arc-shaped groove one and an arc-shaped groove two.

[0009] Preferably, the top center of the swing arm is provided with a groove, and a support wheel is rotatably installed in the groove.

[0010] Preferably, an L-shaped plate is fixedly connected to the end of the bottom fixing plate, a telescopic cylinder II is fixedly fixed to the top of the L-shaped plate in the horizontal direction, a transmission block is fixed to the end of the piston rod of the telescopic cylinder II, an elongated hole is provided between the front and rear walls of the transmission block, a short shaft is fixedly sleeved to the top of the torque sensor rotor, a rocker arm is fixedly sleeved to the top of the short shaft in the radial direction, and the outer end of the rocker arm is movably sleeved in the elongated hole.

[0011] Preferably, a measuring block is radially fixed to the bottom end of the torque sensor rotor that passes through the bottom surface of the bottom fixing plate. A proximity sensor for detecting the outer end of the measuring block is vertically installed on the front wall of the vertical partition plate below the bottom fixing plate. An alarm light is installed on the top of the outer casing, and the alarm light is electrically connected to the proximity sensor.

[0012] Preferably, the top surface of the swing plate has an upper protrusion corresponding to the position of the rear half of the perforation. The upper protrusion has an arc-shaped groove three at the front center. A guide block is fixed at the center of the top surface of the swing plate. A sliding plate is slidably sleeved at the center of the guide block along the longitudinal direction. An arc-shaped groove four opposite to the arc-shaped groove three is provided at the center of the rear end of the sliding plate. A fixed lug is provided at the center of the front end of the top surface of the swing plate. A vertical plate is slidably snapped onto one side of the front end of the top surface of the swing plate along the longitudinal direction. A telescopic cylinder three is fixed vertically at the top of the vertical plate. A movable lug is fixed at the bottom end of the piston rod of the telescopic cylinder three. A pair of connecting plates with their bottom ends respectively hinged to the bottom of the movable lug are respectively hinged to the fixed lug and the center of the front end of the sliding plate.

[0013] Preferably, an annular plate is fixed on the top surface of the swing plate corresponding to the position of the perforation. The annular plate is fixedly connected to the bottom surface of the external gear ring. A sliding groove is provided in the middle of the annular plate. A telescopic cylinder three is fixed in the middle of the front end of the top surface of the swing plate. A plate strip that is slidably engaged in the sliding groove is fixedly connected to the rear end of the piston rod of the telescopic cylinder three. An arc-shaped groove five is provided at the rear end of the plate strip.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model relates to an electromagnetic pump nozzle anti-loosening detection device. In use, the electromagnetic pump to be tested is inserted through the through holes in the inner cavity of the outer gear ring and the swing plate. Then, the nozzle clamping mechanism clamps and fixes the nozzle of the electromagnetic pump to be tested, and the pump body clamping mechanism fixes the pump body of the electromagnetic pump to be tested to the swing plate. Then, the torque detection mechanism drives the swing plate to rotate the pump body of the electromagnetic pump through the meshing relationship between the gear and the outer gear ring, so as to quickly complete the electromagnetic pump nozzle anti-loosening detection work, which not only greatly reduces the labor consumption, but also improves the detection efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the nozzle clamping mechanism of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the torque detection mechanism of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the first arrangement of the pump body clamping mechanism of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the second arrangement of the pump body clamping mechanism of this utility model.

[0021] In the diagram: 1-Outer casing; 1.1-Vertical partition; 1.2-Rectangular opening;

[0022] 2-Oil nozzle clamping mechanism; 2.1-Fixed slot; 2.2-Fixed clamping plate; 2.2.1-Arc groove one; 2.3-Modible clamping plate; 2.3.1-Arc groove two; 2.4-Guide rod; 2.5-Spring; 2.6-Swing arm; 2.6.1-Gate; 2.7-Rectangular frame; 2.8-Telescopic cylinder one; 2.9-Support wheel;

[0023] 3-Torque detection mechanism; 3.1-Base fixing plate; 3.2-Gear; 3.3-Torque sensor; 3.4-L-shaped plate; 3.5-Telescopic cylinder II; 3.6-Transmission block; 3.6.1-Oblong hole; 3.7-Short shaft; 3.8-Swing rod; 3.9-External gear ring; 3.10-Measuring block;

[0024] 4-Pump body clamping mechanism; 4.1-Swing plate; 4.1.1-Perforation; 4.1.2-Upper protrusion; 4.1.3-Arc groove three; 4.1.4-Fixed lug; 4.2-Sliding plate; 4.2.1-Arc groove four; 4.3-Vertical plate; 4.4-Telescopic cylinder three; 4.5-Modible lug; 4.6-Connecting plate; 4.7-Guide block; 4.8-Slot block; 4.9-Annular plate; 4.9.1-Slide groove; 4.10-Strip; 4.10.1-Arc groove five;

[0025] 5 - Proximity sensor;

[0026] 6- Alarm light. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1, please refer to Figures 1-4 This utility model provides a technical solution: an anti-loosening detection device for an electromagnetic pump nozzle. A rectangular opening 1.2 is provided in the center of the top surface of the outer casing 1, and a vertical partition 1.1 is provided in the inner cavity of the outer casing 1 behind the rectangular opening 1.2. The outer casing 1 is constructed from an aluminum profile support frame structure, and then an aluminum alloy plate is used as a sealing plate to form the casing structure.

[0029] The nozzle clamping mechanism 2 is located in the middle of the inner cavity of the outer casing 1 and is used to clamp and fix the nozzle of the electromagnetic pump under test. The nozzle clamping mechanism 2 includes a fixed slot 2.1 whose rear end is fixedly connected to the front wall of the vertical partition 1.1 near the top; a fixed clamping plate 2.2 fixed to the front wall of the vertical partition 1.1 and located above the rear end of the fixed slot 2.1; a guide rod 2.4 whose rear end is fixedly sleeved on the front wall of the fixed clamping plate 2.2; a movable clamping plate 2.3 slidably sleeved on the guide rod 2.4; a spring 2.5 connecting the fixed clamping plate 2.2 and the movable clamping plate 2.3; and a hinge near the top. The swing arm 2.6 is attached to the front end of the fixed slot 2.1 and located in front of the movable clamping plate 2.3; the telescopic cylinder 2.8 is fixed to the bottom of the rear wall of the vertical partition 1.1 and has its piston rod passing through the vertical partition 1.1; and the rectangular frame 2.7 is fixed to the front end of the piston rod of the telescopic cylinder 2.8 and has its inner cavity movably connected to the bottom of the swing arm 2.6. The middle part of the front wall of the fixed clamping plate 2.2 and the middle part of the rear wall of the movable clamping plate 2.3 are respectively provided with arc groove 2.2.1 and arc groove 2.3.1. That is, when placing the electromagnetic pump under test, its nozzle is inserted between arc-shaped groove 2.2.1 and arc-shaped groove 2.3.1. Then, the telescopic cylinder 2.8 pushes the rectangular frame 2.7, which in turn pushes the bottom of the swing arm 2.6 forward, causing the top of the swing arm 2.6 to swing backward. This pushes the movable clamping plate 2.3 backward, causing the movable clamping plate 2.3 to compress the spring 2.5 under the guidance of the guide rod 2.4 and move relative to the fixed clamping plate 2.2. This closes the arc-shaped groove 2.2.1 and arc-shaped groove 2.3.1, thus clamping and fixing the nozzle. When the telescopic cylinder 2.8 retracts its piston rod, the movable clamping plate 2.3 moves forward under the rebound of the spring 2.5, releasing the clamping effect on the nozzle. The telescopic cylinder 2.8 is a pneumatic cylinder.

[0030] To reduce resistance, a slot 2.6.1 is provided at the center of the top of the swing arm 2.6, and a support wheel 2.9 is rotatably mounted in the slot 2.6.1. That is, the top of the swing arm 2.6 makes rolling contact with the front wall of the movable clamping plate 2.3 through the support wheel 2.9.

[0031] The torque detection mechanism 3 includes a bottom fixing plate 3.1 fixed to the top of the front wall of the vertical partition 1.1, a gear 3.2 rotatably sleeved on the bottom of the central shaft on the bottom fixing plate 3.1, a torque sensor 3.3 fixedly sleeved on the bottom of the rotor at the center of the gear 3.2, an external gear ring 3.9 meshing with the gear 3.2, and a power mechanism for driving the top of the rotor of the torque sensor 3.3 to rotate. Specifically, an L-shaped plate 3.4 is fixedly connected to the end of the bottom fixing plate 3.1, a telescopic cylinder 3.5 is fixed horizontally at the top of the L-shaped plate 3.4, a transmission block 3.6 is fixed to the end of the piston rod of the telescopic cylinder 3.5, and an elongated hole 3.6.1 is provided between the front and rear walls of the transmission block 3.6. A short shaft 3.7 is fixedly sleeved on the top of the rotor of the torque sensor 3.3, a rocker arm 3.8 is fixedly sleeved radially at the top of the short shaft 3.7, and the outer end of the rocker arm 3.8 is movably sleeved within the elongated hole 3.6.1. A measuring block 3.10 is radially fixed to the bottom end of the torque sensor 3.3 rotor, which passes through the bottom surface of the base plate 3.1. A proximity sensor 5 for detecting the outer end of the measuring block 3.10 is vertically installed on the front wall of the vertical partition 1.1, located below the base plate 3.1. An alarm light 6 is installed on the top of the outer housing 1, and the alarm light 6 is electrically connected to the proximity sensor 5. That is, when the telescopic cylinder 3.5 pushes the transmission block 3.6, the swing arm 3.8 tends to twist the short shaft 3.7. The short shaft 3.7 transmits torque through the torque sensor 3.3, gear 3.2, and external gear ring 3.9. The torque sensor 3.3 can detect the magnitude of the transmitted torque in real time. If rotation occurs during torque transmission, that is, the measuring block 3.10 swings at a certain angle, the proximity sensor 5 will detect the swinging measuring block 3.10 and then raise the activation signal for the alarm light 6. The top surface of the inner cavity of the outer housing 1 is provided with a structure for rotatably supporting the outer gear ring 3.9. For example, the top surface of the outer gear ring 3.9 is provided with an annular flange, and the top surface of the inner cavity of the outer housing 1 is provided with a ring sleeve that rotatably engages with the annular flange.

[0032] The pump body clamping mechanism 4 includes a swing plate 4.1 located above the nozzle clamping mechanism 2 and fixedly connected to the bottom surface of the outer gear ring 3.9. The swing plate 4.1 has a through hole 4.1.1 positioned opposite the central cavity of the outer gear ring 3.9. The top surface of the swing plate 4.1 has a mechanism for relatively horizontal movement to clamp the pump body of the electromagnetic pump under test. To ensure the smooth rotation of the swing plate 4.1, the top surface of the vertical partition plate 1.1 is fixedly connected with a pair of locking slot blocks 4.8 that are matched to the rotation of the swing plate 4.1.

[0033] Among them, the top surface of the swing plate 4.1 is provided with an upper protrusion 4.1.2 corresponding to the rear half of the perforation 4.1.1. The upper protrusion 4.1.2 has an arc-shaped groove 4.1.3 at the middle of the front end. A guide block 4.7 is fixed at the middle of the top surface of the swing plate 4.1. A sliding plate 4.2 is slidably sleeved at the middle of the guide block 4.7 along the longitudinal direction. An arc-shaped groove 4.2.1 corresponding to the arc-shaped groove 4.1.3 is provided at the middle of the rear end of the sliding plate 4.2. A fixed lug 4.1.4 is provided at the middle of the front end of the top surface of the swing plate 4.1. A vertical plate 4.3 is slidably snapped onto one side of the front end of the top surface of the swing plate 4.1 along the longitudinal direction. A telescopic cylinder 4.4 is fixed vertically at the top of the vertical plate 4.3. A movable lug 4.5 is fixed at the bottom end of the piston rod of the telescopic cylinder 4.4. A pair of connecting plates 4.6 are hinged at the bottom of the movable lug 4.5, with their bottom ends respectively corresponding to the fixed lug 4.1.4 and the middle of the front end of the sliding plate 4.2.

[0034] That is, the electromagnetic pump to be tested is placed between the arc-shaped groove 3 (4.1.3) and the arc-shaped groove 4 (4.2.1) from the middle of the outer gear ring 3.9, and passes through the through hole 4.1.1 so that the oil nozzle can be inserted between the arc-shaped groove 1 (2.2.1) and the arc-shaped groove 2 (2.3.1). The pump body of the electromagnetic pump is located between arc-shaped groove 3 (4.1.3) and arc-shaped groove 4 (4.2.1). Then, the piston rod of telescopic cylinder 3 (4.4) extends downward, so that the movable lug 4.5 pushes the fixed lug 4.1.4 and the sliding plate 4.2 to both sides through the connecting plate 4.6, so that the arc-shaped groove 4 (4.2.1) is firmly pressed against the outer wall of the electromagnetic pump body. This facilitates the transmission of torque from torque detection mechanism 3 to the pump body, so as to achieve relative torsion between the nozzle and the pump body. If the proximity sensor 5 detects the swing plate 4.1 swinging, it indicates that the nozzle and the pump body have undergone relative torsion and loosening. The torque sensor 3.3 detects the change of torque in real time to complete the anti-loosening detection of the electromagnetic pump nozzle.

[0035] Example 2, please refer to Figures 1-3 5. This utility model provides a technical solution. Compared with Embodiment 1, the only difference in this embodiment is the arrangement of the pump body clamping mechanism 4. The specific arrangement of the pump body clamping mechanism 4 in this embodiment is as follows:

[0036] An annular plate 4.9 is fixed on the top surface of the swing plate 4.1 at the position corresponding to the perforation 4.1.1. The annular plate 4.9 is fixedly connected to the bottom surface of the external gear ring 3.9. A sliding groove 4.9.1 is provided in the middle of the annular plate 4.9. A telescopic cylinder 4.4 is fixed in the middle of the front end of the top surface of the swing plate 4.1. A strip 4.10 is fixedly connected to the rear end of the piston rod of the telescopic cylinder 4.4 and is slidably engaged in the sliding groove 4.9.1. An arc-shaped groove 4.10.1 is provided at the rear end of the strip 4.10.

[0037] That is, the electromagnetic pump under test is placed into the central cavity of the annular plate 4.9 from the middle of the outer gear ring 3.9, and passes through the through hole 4.1.1, so that the oil nozzle can be inserted between the arc groove 2.2.1 and the arc groove 2.3.1. The pump body of the electromagnetic pump is located behind the arc groove 4.10.1. Then, the piston rod of the telescopic cylinder 4.4 extends backward, so that the plate 4.10 slides backward along the slide groove 4.9.1 until the arc groove 4.10.1 is firmly pressed against the outer wall of the pump body, so as to transmit the torque of the torque detection mechanism 3 to the pump body, so as to realize the relative torsion of the oil nozzle and the pump body. If the proximity sensor 5 detects the swing plate 4.1 swinging, it indicates that the oil nozzle and the pump body have undergone relative torsion and loosening. The torque sensor 3.3 detects the change of torque in real time to complete the anti-loosening detection of the electromagnetic pump oil nozzle.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detection device for preventing loosening of an electromagnetic pump nozzle, characterized in that, include: The outer casing (1) has a rectangular opening (1.2) in the middle of its top surface, and a vertical partition (1.1) is provided in the inner cavity of the outer casing (1) at the position behind the rectangular opening (1.2); The nozzle clamping mechanism (2) is located in the middle of the inner cavity of the outer casing (1) and is used to clamp and fix the nozzle of the electromagnetic pump under test. The torque detection mechanism (3) includes a bottom fixing plate (3.1) fixed to the top of the front wall of the vertical partition (1.1), a gear (3.2) rotatably sleeved on the bottom of the central shaft on the bottom fixing plate (3.1), a torque sensor (3.3) fixedly sleeved on the bottom of the rotor at the center of the gear (3.2), an external gear ring (3.9) meshing with the gear (3.2), and a power mechanism for driving the top of the rotor of the torque sensor (3.3) to rotate. The pump body clamping mechanism (4) includes a swing plate (4.1) located above the nozzle clamping mechanism (2) and fixedly connected to the bottom surface of the external gear ring (3.9). The swing plate (4.1) has a through hole at the position opposite to the central cavity of the external gear ring (3.9). 4.1.1) The top surface of the swing plate (4.1) is provided with a mechanism for relatively horizontal movement to clamp the pump body of the electromagnetic pump under test.

2. The electromagnetic pump nozzle anti-loosening detection device according to claim 1, characterized in that: The top surface of the vertical partition (1.1) is fixedly connected with a pair of slot blocks (4.8) that are matched to the rotatable engagement of the swing plate (4.1).

3. The electromagnetic pump nozzle anti-loosening detection device according to claim 1, characterized in that: The nozzle clamping mechanism (2) includes a fixed slot (2.1) fixedly connected to the front wall of the vertical partition (1.1) near the top end, a fixed clamping plate (2.2) fixed to the front wall of the vertical partition (1.1) and located on the upper side of the rear end of the fixed slot (2.1), a guide rod (2.4) fixedly sleeved to the front wall of the fixed clamping plate (2.2), a movable clamping plate (2.3) slidably sleeved on the guide rod (2.4), a spring (2.5) connecting the fixed clamping plate (2.2) and the movable clamping plate (2.3), and a hinge near the top end. The fixed clamping plate (2.2) has a swing arm (2.6) at the front end of the fixed clamping groove (2.1) and in front of the movable clamping plate (2.3), a telescopic cylinder (2.8) fixed to the bottom of the rear wall of the vertical partition (1.1) with the piston rod passing through the vertical partition (1.1), and a rectangular frame (2.7) fixed to the front end of the piston rod of the telescopic cylinder (2.8) and whose inner cavity is movably connected to the bottom of the swing arm (2.6). The middle part of the front wall of the fixed clamping plate (2.2) and the middle part of the rear wall of the movable clamping plate (2.3) are respectively provided with an arc groove (2.2.1) and an arc groove (2.3.1).

4. The electromagnetic pump nozzle anti-loosening detection device according to claim 3, characterized in that: The top center of the swing arm (2.6) is provided with a groove. 2.6.1) A support wheel (2.9) is rotatably installed inside the slot (2.6.1).

5. The electromagnetic pump nozzle anti-loosening detection device according to claim 1, characterized in that: An L-shaped plate (3.4) is fixedly connected to the end of the bottom fixing plate (3.1). A telescopic cylinder (3.5) is fixed to the top of the L-shaped plate (3.4) in the horizontal direction. A transmission block (3.6) is fixed to the end of the piston rod of the telescopic cylinder (3.5). An elongated hole (3.6.1) is provided between the front and rear walls of the transmission block (3.6). A short shaft (3.7) is fixedly sleeved on the top of the rotor of the torque sensor (3.3). A rocker arm (3.8) is fixedly sleeved on the top of the short shaft (3.7) in the radial direction. The outer end of the rocker arm (3.8) is movably sleeved in the elongated hole (3.6.1).

6. The electromagnetic pump nozzle anti-loosening detection device according to claim 5, characterized in that: The rotor of the torque sensor (3.3) is radially fixed to the bottom end of the bottom surface of the bottom fixing plate (3.1). A proximity sensor (5) for detecting the outer end of the measuring block (3.10) is vertically installed on the front wall of the vertical partition plate (1.1) below the bottom fixing plate (3.1). An alarm light (6) is installed on the top of the outer casing (1). The alarm light (6) is electrically connected to the proximity sensor (5).

7. The electromagnetic pump nozzle anti-loosening detection device according to claim 5, characterized in that: The top surface of the swing plate (4.1) has an upper protrusion (4.1.2) corresponding to the rear half of the perforation (4.1.1). The upper protrusion (4.1.2) has an arc-shaped groove (4.1.3) at its front end. A guide block (4.7) is fixed to the center of the top surface of the swing plate (4.1). A sliding plate (4.2) is slidably fitted longitudinally onto the center of the guide block (4.7). An arc-shaped groove (4.2.1) is located at the center of the rear end of the sliding plate (4.2), opposite to the arc-shaped groove (4.1.3). The swing plate... A fixed lug (4.1.4) is provided at the middle of the front end of the top of the plate (4.1). A vertical plate (4.3) is slidably engaged with one side of the front end of the top of the swing plate (4.1) along the longitudinal direction. A telescopic cylinder three (4.4) is fixed at the top of the vertical plate (4.3) along the vertical direction. A movable lug (4.5) is fixed at the bottom end of the piston rod of the telescopic cylinder three (4.4). A pair of connecting plates (4.6) are hinged at the bottom of the movable lug (4.5), with their bottom ends respectively corresponding to the fixed lug (4.1.4) and the middle of the front end of the sliding plate (4.2).

8. The electromagnetic pump nozzle anti-loosening detection device according to claim 5, characterized in that: An annular plate (4.9) is fixed on the top surface of the swing plate (4.1) at the position corresponding to the perforation (4.1.1). The annular plate (4.9) is fixedly connected to the bottom surface of the external gear ring (3.9). A sliding groove (4.9.1) is provided in the middle of the annular plate (4.9). A telescopic cylinder three (4.4) is fixed in the middle of the front end of the top surface of the swing plate (4.1). A strip (4.10) that slides and engages with the rear end of the piston rod of the telescopic cylinder three (4.4) is fixedly connected to the rear end of the strip (4.9.1). An arc-shaped groove five (4.10.1) is provided at the rear end of the strip (4.10).

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