Grain storage temperature measurement cable joint rust removal device

Abstract

The utility model provides a grain storage temperature measurement cable joint rust removal device, which comprises a device main body, and is characterized in that the device main body is provided with a turntable and a push rod; the rotary table is rotatably arranged, a plurality of rotary table through holes distributed in a circular matrix are formed in the rotary table, a rust removal head is arranged in each rotary table through hole, and a rust removal head is arranged at the front end of each rust removal head; the push rod is movably arranged behind the rotary disc, one rotary disc through hole serves as a working hole and right faces the push rod, and different rotary disc through holes can right face the push rod by rotating the rotary disc. The push rod can be inserted into the working hole by pushing the push rod forwards, and the derusting head in the working hole is pushed out; the push rod can be pulled backwards to retreat from the working hole, and then the head for rust removal can be retracted. According to the utility model, a plurality of derusting heads are quickly switched, the derusting requirements of cable joints of different sizes or types are met, the technical problem of derusting maintenance of temperature measuring cables of various specifications and types in the current grain storage industry is effectively solved, and the derusting device is very suitable for maintenance work of the grain storage temperature measuring cable joints.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grain and oil storage, especially to a rust removal device for rust removal and maintenance of a grain storage temperature measurement cable joint. BACKGROUND

[0002] Grain is the basis of human survival, and its storage and preservation safety is crucial. There are many factors that affect the safety of grain storage, among which the temperature of grain in the granary is the key. In order to minimize the losses caused by heating, mold and other reasons during grain storage, it is necessary to detect the temperature in the stored grain in real time and judge the grain condition according to the measured data, so as to eliminate hidden dangers in time. Therefore, using intelligent grain condition measurement and control system to analyze and control the factors affecting the quality of grain storage has become an inevitable choice for the modernization of granary.

[0003] Currently, most of the grain condition (grain temperature) detection systems of domestic and foreign grain storage units use temperature measurement cables for temperature measurement. Grain temperature measurement cable can monitor the temperature distribution of different areas inside the granary in real time, helping management personnel to understand the storage state of grain in time. It is not only an important tool in grain storage management, but also a key link to ensure grain safety and prevent grain loss. Through real-time monitoring and early warning, problems such as grain mold and insect damage caused by abnormal temperature can be effectively prevented. Once the temperature is abnormal, appropriate measures such as ventilation and cooling can be taken to ensure that the grain is stored within the appropriate temperature range.

[0004] PH3 fumigation has a history of many years in China for preventing and controlling stored grain pests, and it is difficult to replace it with a new fumigant with excellent performance in the future. In terms of nature, it can react with all metals, especially copper or copper alloy, causing serious corrosion, discoloration and acid formation on the surface. The material of the temperature measurement cable joint pin is generally pure copper, silver plating or zinc plating, etc. Although the temperature measurement cable joint has been treated for sealing, it is often corroded after fumigation or long-term use, resulting in poor contact and damage, affecting the real-time and reliability of temperature data monitoring and collection, and directly leading to the shortening of cable service life, the increase of maintenance and replacement frequency, and the increase of cable use cost. Under this industry background and the needs of the majority, it is necessary to design a "stored grain temperature measurement cable joint rust removal device" to facilitate the rust removal and maintenance of the corroded cable joint, improve the reliability and integrity of the temperature measurement data, prolong the service life and reuse rate of the temperature measurement product, and reduce the storage cost. In addition, there are many temperature measurement device manufacturers and various specifications at present, so that there are many types of cable joints in the storage site. The designed "stored grain temperature measurement cable joint rust removal device" also needs to consider solving the technical problems of rust removal of various cable joints in the storage site. SUMMARY

[0005] The utility model discloses a grain storage temperature measurement cable joint rust removal device to solve the problems in the above background art.

[0006] The utility model discloses a grain storage temperature measurement cable joint rust removal device to solve the problems in the above background art.

[0007] Grain storage temperature measurement cable joint rust removal device, it includes the device main body, its characterized in that: the device main body is equipped with carousel and push rod, carousel can be rotatoryly arranged, and it has a plurality of carousel through -holes of circular matrix distribution along the axial direction on it, and each carousel through -hole is built -in 1 rust removal head, and the front end of rust removal head has the head for rust removal, and the rear end has the seat, push rod is movably arranged in the rear of carousel, and one of the carousel through -holes of carousel is used as the working hole, and the working hole is arranged opposite the front end of push rod, and rotating carousel can make different carousel through -holes opposite the front end of push rod.

[0008] Forward push push rod can make the front end of push rod insert the working hole, and the head for rust removal of rust removal head in the working hole is pushed out, and backward pull push rod can make the front end of push rod exit the working hole, and then the head for rust removal of rust removal head can be withdrawn.

[0009] Optimization scheme, the carousel through -hole of carousel is polygonal hole, and the seat of rust removal head adopts polygonal columnar structure that is matched with the shape of carousel through -hole, and the carousel through -hole is matched with the seat of rust removal head to realize that rust removal head does not rotate.

[0010] Optimization scheme, the device main body has front baffle and rear baffle that shield the front and rear ends of carousel respectively, and the front baffle and rear baffle have front perforation and rear perforation respectively corresponding to the two ends of the working hole, and forward push push rod can make the front end of push rod insert the working hole from the rear perforation of rear baffle, and the head for rust removal of rust removal head in the working hole is pushed out from the front perforation of front baffle.

[0011] Further optimization scheme, the front end of front perforation has tubular joint, and detachable mounting cap is installed on tubular joint, the mounting cap has cap hole that is coaxially arranged with front perforation, and the head for rust removal of rust removal head in the working hole can be worn out device main body from the cap hole of mounting cap, and at the same time, rust removal head is blocked in device main body from the seat of rust removal head through mounting cap.

[0012] Still further, the inner wall of mounting cap and the outer wall of tubular joint have connecting threads respectively, so that mounting cap is installed on tubular joint through threads.

[0013] Further optimization scheme, the central axis is fixed between the front baffle and rear baffle of device main body and corresponds to the center of carousel, and the center of carousel has carousel center hole and is movably sleeved on the central axis, so that carousel can be rotatoryly arranged through central axis.

[0014] Further, the front end surface of the rotating disc has a plurality of positioning grooves distributed in a circular matrix along the center of the rotating disc, the positioning grooves are arranged one by one corresponding to the rotating disc through holes, and the front baffle of the device body has a positioning protrusion that can be inserted into at least one positioning groove; the rear end of the rotating disc on the middle shaft is sleeved with a first telescopic spring between the rear baffle, and the first telescopic spring always pushes the rotating disc.

[0015] The optimization scheme has a push rod sleeve corresponding to the push rod on the device body, the push rod sleeve is a cylindrical shell structure with a front end communicating working hole and a rear end closed, has a sleeve inner cavity in the push rod sleeve, and movably has a push rod arranged in the sleeve inner cavity, the side wall of the push rod sleeve has an elongated push rod guide hole arranged in the axial direction, the push rod has a guide column that passes out of the push rod guide hole, the guide column can be moved along the push rod guide hole, and the two ends of the push rod guide hole respectively have a front end clamping hole and a rear end clamping hole arranged in the radial direction of the push rod sleeve.

[0016] When the rust removal head is pushed out of the device body, the guide column of the push rod is moved to be inserted into the front end clamping hole, so that the push rod is tightly pushed against the rust removal head; when the rust removal head is retracted into the device body, the guide column of the push rod is moved to be inserted into the rear end clamping hole.

[0017] The further optimization scheme has a second telescopic spring arranged between the rear end of the push rod in the push rod sleeve and the push rod sleeve, and the second telescopic spring always pushes the push rod.

[0018] The optimization scheme has two types of rust removal heads, including a rust removal male head and a rust removal female head, the rust removal head part of the rust removal male head has an elongated cylindrical rust removal column, and the outer wall surface of the rust removal column is a rust removal friction surface, the rust removal head part of the rust removal female head has an elongated cylindrical structure, and the center thereof has a rust removal hole, and the hole wall of the rust removal hole is a rust removal friction surface.

[0019] The utility model has the following substantial characteristics and progress:

[0020] 1. The utility model discloses a rotating disc and a push rod, which can move different rust removal heads to the working hole and push the rust removal head part out, so that the rust removal head part contacts the cable joint that needs to be maintained, the rust removal maintenance of the cable joint for storing grain temperature measurement is realized, the good contact and signal transmission of the cable joint are ensured, and the service life of the cable is prolonged.

[0021] 2. The utility model discloses a rotating disc and a plurality of different rust removal heads, which can select different rust removal heads according to the specific situation of the cable joint, such as a rust removal male head or a rust removal female head, and different sizes of rust removal male heads or rust removal female heads, so as to adapt to different specifications or types of cable joints, enhance the universality of the device, meet various rust removal needs, and improve the rust removal efficiency.

[0022] 3, the utility model discloses a different rust removal head's specification can be carried out on the outer surface of the rotating disc figure or character etc. Marking, so as to select the appropriate rust removal head and turn to the working hole position, very convenient to use, simultaneously, the different rust removal head is concentrated and is placed, convenient to carry, and convenient to replace the rust removal head of working position, ensure that the rust maintenance of various temperature measurement cable in the grain storage environment is timely and efficient, whether it is daily storage or the rust removal operation of grain storage environment site, can easily cope with, be applicable to the rust removal demand of various cable joints, greatly improve the convenience and efficiency of use. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the whole structure schematic diagram of the utility model.

[0024] Figure 2 It is the exploded state schematic diagram of the rotating disc and rust removal head of the utility model.

[0025] Figure 3 It is the structure schematic diagram of the device main body of the utility model.

[0026] Figure 4 It is a kind of use state diagram of the utility model.

[0027] Figure 5 It is Figure 4 The schematic diagram of rust removal head retraction working hole in the state shown in figure 8.

[0028] Figure 6 It is Figure 4 The schematic diagram of rust removal head push-out working hole in the state shown in figure 9.

[0029] Figure 7 It is another use state diagram of the utility model.

[0030] Figure 8 It is Figure 7 The schematic diagram of rust removal head retraction working hole in the state shown in figure 8.

[0031] Figure 9 It is Figure 7 The schematic diagram of rust removal head push-out working hole in the state shown in figure 9. DETAILED DESCRIPTION

[0032] The utility model will be further described below in connection with the drawings.

[0033] EMBODIMENT

[0034] Reference Figures 1 to 9 A kind of rust removal device for grain storage temperature measurement cable joint, it includes device main body 1.

[0035] The device main body 1 is equipped with rotating disc 2 and push rod 3, as Figure 2As shown, the rotating disc 2 is rotatably arranged and has a plurality of rotating disc through holes 21 arranged in a circular matrix along the axial direction, and each rotating disc through hole 21 is internally provided with one rust removal head 4, the rust removal head 4 has a rust removal head portion 41 at the front end and a seat portion 42 at the rear end. The push rod 3 is movably arranged at the rear of the rotating disc 2, one of the rotating disc through holes 21 of the rotating disc 2 serves as a working hole 22, the working hole 22 is arranged opposite to the front end of the push rod 3, and rotating the rotating disc 2 can make different rotating disc through holes 21 opposite to the front end of the push rod 3.

[0036] As shown in Figure 6 and Figure 9 , pushing the push rod 3 forward can make the front end of the push rod 3 inserted into the working hole 22, and the rust removal head portion 41 of the rust removal head 4 in the working hole 22 is pushed out; as shown in Figure 5 and Figure 8 , pulling the push rod 3 backward can make the front end of the push rod 3 exit the working hole 22, and then the rust removal head portion of the rust removal head 4 can be retracted.

[0037] In this embodiment, as shown in Figure 2 , Figure 4 and Figure 7 , the rust removal head 4 includes four rust removal male heads 43 and four rust removal female heads 44, the rust removal head portion 41 of the rust removal male head 43 has a long strip-shaped columnar structure rust removal column 431, the outer wall surface of the rust removal column 431 is a rust removal friction surface, the rust removal head portion 41 of the rust removal female head 44 has a long strip-shaped columnar structure and has a rust removal hole 441 in the center, and the hole wall of the rust removal hole 441 is a rust removal friction surface. Generally, a plurality of types or sizes of rust removal heads 4 are provided, and the user can select the appropriate rust removal head 4 according to the cable connector condition of the storage site and install it on the rotating disc 2.

[0038] In the above structure, the rotating disc 2 and the push rod 3 arranged on the device main body 1 are respectively used for rotating and selecting the rust removal head 4 and pushing out the rust removal head 4 for rust removal work. In use, according to different specifications or types of cable connectors, the appropriate rust removal head 4 is selected, and the selected rust removal head 4 is rotated to the working hole 22 position by rotating the rotating disc 2. Then, as shown in Figure 6 and Figure 9 , pushing the push rod 3 forward can push out the rust removal head portion 41 of the rust removal head 4 turned into the working hole 22, and the pushed-out rust removal head portion 41 is inserted into the cable connector (not shown in the figure) that needs to be rusted, and then the rust removal head 4 is rotated relative to the cable connector, so that the cable connector can be rusted.

[0039] After the rust removal is completed, as shown in Figure 5 and Figure 8As shown, the push rod 3 and the rust removal head 4 are manually retracted into the device body 1 to be carried to the next working environment for new rust removal operation. In the new rust removal operation, the rust removal head 4 is selected according to the size or type of the cable joint to be rusted as described above. The above structure realizes quick switching of different rust removal heads 4 by centrally placing a plurality of rust removal heads 4, and the rust removal device of the embodiment can be carried to the grain storage site for cable maintenance, which is very convenient for carrying and quick use.

[0040] Further, in the embodiment, as shown in Figure 2 The rotating disc through hole 21 of the rotating disc 2 is a polygonal hole, specifically a regular hexagon in the embodiment, and the seat part 42 of the rust removal head 4 adopts a polygonal columnar structure matched with the shape of the rotating disc through hole 21. The rotating disc through hole 21 cooperates with the seat part 42 of the rust removal head 4 to realize non-rotation of the rust removal head 4. Through the shape cooperation of the polygon, the static property between the rotating disc through hole 21 and the rust removal head 4 is simply and reliably realized. Manual rotation of the entire device body 1 realizes relative rotation of the rust removal head 4 and the cable joint during rust removal, which is beneficial to quick rust removal operation. It should be noted that the front perforation 111 of the front baffle 11 can also be a polygonal hole same as the rotating disc through hole 21, so that the seat part 42 of the rust removal head 4 can be pushed into the front perforation 111, and the rust removal head part 41 of the rust removal head 4 can be pushed out more, more rust removal friction surfaces can be exposed, and the rust removal effect is ensured.

[0041] Further, in the embodiment, as shown in Figure 1 and Figure 3 The device body 1 has a front baffle 11 and a rear baffle 12 respectively shielding the front and rear ends of the rotating disc 2, and the front baffle 11 and the rear baffle 12 have a front perforation 111 and a rear perforation respectively corresponding to the two ends of the working hole 22. Forward pushing of the push rod 3 can make the front end of the push rod 3 inserted into the working hole 22 through the rear perforation of the rear baffle 12, and the rust removal head part 41 of the rust removal head 4 in the working hole 22 is pushed out through the front perforation 111 of the front baffle 11. In this structure, the front baffle 11 and the rear baffle 12 shield other rotating disc through holes 21 outside the working hole 22, and further block the rust removal head 4 in the rotating disc through hole 21. This baffle shielding structure is very simple and ingenious in design, and can also expose most of the rotating disc 2, which is convenient for manual operation of the rotating disc 2 to make it rotate.

[0042] Further, as shown in Figure 1As shown, the front end of the front perforation 111 has a tubular joint 13, and a mounting cap 5 is detachably mounted on the tubular joint 13. In this embodiment, the inner wall of the mounting cap 5 and the outer wall of the tubular joint 13 are respectively provided with connecting threads, so that the mounting cap 5 is mounted on the tubular joint 13 by screwing. The mounting cap 5 has a cap hole 51 coaxially arranged with the front perforation 111, and the rust removal head 4 in the working hole 22 can pass through the cap hole 51 of the mounting cap 5 out of the device body 1, and at the same time, the rust removal head 4 is blocked in the device body 1 by the seat part 42 of the rust removal head 4 through the mounting cap 5.

[0043] In this structure, at the beginning of use, the user first selects a plurality of rust removal heads 4 that may be used later, removes the mounting cap 5, rotates the rotating disc 2 to replace the different rotating disc through holes 21 as the working hole 22, and puts the rust removal heads 4 into the working hole 22 through the tubular joint 13 one by one, and then installs the plurality of rust removal heads 4 on the rotating disc 2. After installation is completed, the mounting cap 5 is installed back on the tubular joint 13, and the rust removal head 4 in the working hole 22 is blocked by the mounting cap 5, which is convenient for subsequent rust removal use. In addition, through the detachable design of the mounting cap 5, the rust removal head 4 used for a period of time is very convenient to replace.

[0044] Further, in this embodiment, the middle shaft 14 is specifically used to realize the rotatable arrangement of the rotating disc 2. Specifically, the middle shaft 14 is fixedly arranged at the center of the rotating disc 2 between the front baffle 11 and the rear baffle 12 of the device body 1, the rotating disc 2 has a rotating disc middle hole 24 at the center and is movably sleeved on the middle shaft 14, so that the rotating disc 2 is rotatably arranged through the middle shaft 14. The middle shaft 14 can be fixed between the front baffle 11 and the rear baffle 12 by screwing or welding, so that the rotating disc 2 is movably sleeved on the middle shaft 14 and can rotate around the middle shaft 14 under stress.

[0045] Further, the purpose of rotating the rotating disc 2 is to rotate the rotating disc through hole 21 to the working hole 22 position, and then to be opposite to the push rod 3, so when rotating the rotating disc 2, how to further improve the fast positioning of the rotating disc through hole 21 and the push rod 3 opposite arrangement is also considered. Therefore, the embodiment also realizes the above positioning through the cooperation of the positioning groove 25 and the positioning protrusion 15. Specifically, the front end face of the rotating disc 2 has a plurality of positioning grooves 25 distributed in a circular matrix along the center of the rotating disc 2, the positioning grooves 25 are arranged one by one corresponding to the rotating disc through hole 21, and the front baffle 11 of the device main body 1 has a positioning protrusion 15 that can be inserted into at least one positioning groove 25. The positioning groove 25 is located on both sides of the positioning protrusion 15, and the edge is designed as an arc-shaped transition edge with arc-shaped chamfering, which facilitates the positioning protrusion 15 to move along the arc-shaped transition edge away from the positioning groove 25 when rotating the rotating disc 2. The rear end of the rotating disc 2 and the rear baffle 12 on the middle shaft 14 are also sleeved with a first telescopic spring 6, which always pushes the rotating disc 2, and plays a role of elastic support for the rotating disc 2, avoiding free rotation of the rotating disc 2. Under the elastic support of the first telescopic spring 6, rotating the rotating disc 2, the positioning protrusion 15 of the rotating disc 2 can be separated from the inserted positioning groove 25, and then the rotating disc 2 is rotated to the position where the rust removal head 4 is located in the working hole 22, and the positioning protrusion 15 of the rotating disc 2 is naturally inserted into the new positioning groove 25, so that the rotating disc 2 and the push rod 3 are quickly and reliably positioned.

[0046] Further, the push rod 3 of the embodiment is movably installed through the push rod sleeve 16. Specifically, the device main body 1 has a push rod sleeve 16 corresponding to the push rod 3, the push rod sleeve 16 is a cylindrical shell structure with a front end communicating with the working hole 22 and a rear end closed, the push rod sleeve 16 has a sleeve inner cavity 17 and movably has the push rod 3, the side wall of the push rod sleeve 16 has a long strip-shaped push rod guide hole 18 arranged in the axial direction, the push rod 3 has a guide column 31 passing out of the push rod guide hole 18, the guide column 31 can be moved along the push rod guide hole 18, and the two ends of the push rod guide hole 18 respectively have a front end clamping hole 181 and a rear end clamping hole 182 arranged in the radial direction of the push rod sleeve 16.

[0047] When the rust removal head 4 is pushed out of the device main body 1, the guide column 31 of the push rod 3 is moved to be inserted into the front end clamping hole 181, so that the push rod 3 tightly pushes the rust removal head 4, ensuring that the rust removal head 4 does not retract into the working hole 22 during rust removal operation. Moving the guide column 31 of the push rod 3 to be inserted into the rear end clamping hole 182 can retract the rust removal head 4 into the device main body 1, and the push rod 3 is positioned by the cooperation of the guide column 31 and the rear end clamping hole 182, avoiding mistakenly pushing out the rust removal head 4.

[0048] It should be noted that when the rust removal head 4 is not placed in the installation cap 5 and the working hole 22, the push rod 3 is inserted into the push rod sleeve 16 along the tubular joint 13 and the working hole 22. The rear end of the push rod sleeve 16 can also be designed as an end cap 160 connected by threads to achieve sealing, and the end cap 160 can be removed to place the push rod 3 into the push rod sleeve 16 from the rear end of the push rod sleeve 16. After the installation of the push rod 3, the guide column 31 is inserted through the push rod guide hole 18 and fixed on the push rod 3 by threaded connection or welding,

[0049] Further, the second extension spring 7 is arranged between the rear end of the push rod 3 in the push rod sleeve 16 and the push rod sleeve 16, which always pushes the push rod 3. When the push rod 3 moves backward, the second extension spring 7 is compressed and stored, and after the guide column 31 of the push rod 3 leaves the rear end clamping hole 182 of the push rod sleeve 16, the second extension spring 7 releases the elastic force to push the push rod 3 forward, realizing the automatic and rapid ejection of the rust removal head 4, and further improving the operation speed. At the same time, when the guide column 31 is inserted into the front end clamping hole 181 or the rear end clamping hole 182 of the push rod sleeve 16, it is always pushed to the push rod 3 by the elastic force of the second extension spring 7, avoiding the free rotation of the push rod 3 from the positioning effect of the front end clamping hole 181 or the rear end clamping hole 182, and further improving the positioning reliability of the push rod 3.

[0050] The rust removal device for the cable joint of the grain storage temperature measurement cable of the embodiment is simple and ingenious in overall design, portable carrying of various rust removal heads 4 is realized through the turntable 2, the push-out use of different rust removal heads 4 is realized through the cooperation of the turntable 2 and the push rod 3, the front baffle 11, the rear baffle 12 and the installation cap 5 are arranged to respectively position and block the rust removal heads 4 in the turntable 2, the positioning recess 25 and the positioning protrusion 15 are arranged to realize the positioning rotation of the turntable 2, the quick switching of multiple rust removal heads is realized, the time for replacing tools is reduced, the work efficiency is improved, it is suitable for different sizes or types of cable joint rust removal requirements, and is used for effectively solving the technical problems of rust removal and maintenance of various specifications and types of temperature measurement cables in the current grain storage industry, and is very suitable for maintenance work of the cable joint of the grain storage temperature measurement cable.

Claims

1. A rust removal device for the joint of a grain temperature measuring cable, comprising a device main body (1), characterized in that: The device body (1) is provided with a rotating disc (2) and a push rod (3); the rotating disc (2) is rotatably arranged and has a plurality of rotating disc through holes (21) in a circular matrix along the axial direction, each rotating disc through hole (21) is provided with a rust removal head (4), the rust removal head (4) has a rust removal head (41) at the front end and a seat (42) at the rear end; the push rod (3) is movably arranged behind the rotating disc (2), one of the rotating disc through holes (21) of the rotating disc (2) is used as a working hole (22), the working hole (22) is arranged opposite to the front end of the push rod (3), and rotating the rotating disc (2) can make different rotating disc through holes (21) opposite to the front end of the push rod (3). Pushing the push rod (3) forward can make the front end of the push rod (3) inserted into the working hole (22), and the rust removal head (41) of the rust removal head (4) in the working hole (22) is pushed out; pulling the push rod (3) backward can make the front end of the push rod (3) exit the working hole (22), and then the rust removal head (41) of the rust removal head (4) can be recovered.

2. The rust removal device for a grain storage temperature measurement cable joint according to claim 1, characterized in that: The rotating disc through hole (21) of the rotating disc (2) is a polygonal hole, the seat (42) of the rust removal head (4) adopts a polygonal column structure matched with the shape of the rotating disc through hole (21), and the rotating disc through hole (21) and the seat (42) of the rust removal head (4) cooperate to realize that the rust removal head (4) does not rotate.

3. The grain storage temperature measurement cable joint rust removal device according to claim 1, characterized in that: The device body (1) has a front baffle (11) and a rear baffle (12) respectively shielding the front and rear ends of the rotating disc (2), the front baffle (11) and the rear baffle (12) have front perforations (111) and rear perforations respectively corresponding to the two ends of the working hole (22); pushing the push rod (3) forward can make the front end of the push rod (3) inserted into the working hole (22) through the rear perforation of the rear baffle (12), and the rust removal head (41) of the rust removal head (4) in the working hole (22) is pushed out through the front perforation (111) of the front baffle (11).

4. The rust removal device for a grain storage temperature measurement cable joint according to claim 3, characterized in that: The front end of the front perforation (111) has a tubular joint (13), a mounting cap (5) is detachably mounted on the tubular joint (13), the mounting cap (5) has a cap hole (51) coaxially arranged with the front perforation (111), the rust removal head (41) of the rust removal head (4) in the working hole (22) can pass out of the device body (1) through the cap hole (51) of the mounting cap (5), and at the same time, the rust removal head (4) is blocked in the device body (1) by the seat (42) of the rust removal head (4) through the mounting cap (5).

5. The rust removal device for a grain storage temperature measurement cable joint according to claim 4, characterized in that: The inner wall of the mounting cap (5) and the outer wall of the tubular joint (13) are respectively provided with connecting threads, so that the mounting cap (5) is screwed on the tubular joint (13).

6. The rust removing device for a grain storage temperature measuring cable joint according to claim 3, characterized in that: The front baffle (11) and the rear baffle (12) of the device body (1) are fixedly provided with a central shaft (14) corresponding to the center of the rotating disc (2), the center of the rotating disc (2) has a rotating disc central hole (24) and is movably sleeved on the central shaft (14), so that the rotating disc (2) is rotatably arranged through the central shaft (14).

7. The grain storage temperature measurement cable joint rust removal device according to claim 6, characterized in that: The front end face of the rotating disc (2) has a plurality of positioning grooves (25) distributed in a circular matrix along the center of the rotating disc (2), the positioning grooves (25) are arranged one by one corresponding to the rotating disc through holes (21), the front baffle (11) of the device body (1) has a positioning protrusion (15) which can be inserted into at least one positioning groove (25); the rear end of the rotating disc (2) on the middle shaft (14) is further sleeved with a first telescopic spring (6) between the rear baffle (12), the first telescopic spring (6) always pushes towards the rotating disc (2).

8. The grain storage temperature measurement cable joint rust removal device according to claim 1, characterized in that: The device body (1) has a push rod sleeve (16) corresponding to the push rod (3), the push rod sleeve (16) is a cylindrical shell structure with a front end communicating working hole (22) and a rear end closed, the push rod sleeve (16) has a sleeve inner cavity (17) and movably has a push rod (3), the sidewall of the push rod sleeve (16) has an elongated push rod guide hole (18) arranged in the axial direction, the push rod (3) has a guide column (31) which passes out of the push rod guide hole (18), the guide column (31) can be moved along the push rod guide hole (18), the two ends of the push rod guide hole (18) respectively have a front end clamping hole (181) and a rear end clamping hole (182) arranged in the radial direction of the push rod sleeve (16); When the rust removal head (4) is pushed out of the device body (1), the guide column (31) of the push rod (3) is moved to be inserted into the front end clamping hole (181), so that the push rod (3) tightly pushes the rust removal head (4); when the rust removal head (4) is retracted into the device body (1), the guide column (31) of the push rod (3) is moved to be inserted into the rear end clamping hole (182).

9. The grain storage temperature measurement cable joint rust removal device according to claim 8, characterized in that: The rear end of the push rod (3) in the push rod sleeve (16) is further provided with a second telescopic spring (7) between the push rod sleeve (16), the second telescopic spring (7) always pushes towards the push rod (3).

10. The grain storage temperature measurement cable joint rust removal device according to any one of claims 1 to 9, characterized in that: The rust removal head (4) includes two types of rust removal male head (43) and rust removal female head (44), the rust removal head (41) of the rust removal male head (43) has an elongated cylindrical structure of a rust removal column (431), the outer wall surface of the rust removal column (431) is a rust removal friction surface, the rust removal head (41) of the rust removal female head (44) has an elongated cylindrical structure, and the center thereof has a rust removal hole (441), the hole wall of the rust removal hole (441) is a rust removal friction surface.

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