A connecting filter device for a diesel tank heating circulating water tank

Abstract

The application discloses a connecting filtering device of a diesel tank heating circulating water tank and relates to the technical field of diesel tanks. The connecting filtering device of the diesel tank heating circulating water tank comprises a circulating water tank, a water inlet pipe arranged on one side of the circulating water tank, a water outlet pipe arranged on the other side of the circulating water tank and a water pipe line arranged on one side of the circulating water tank and communicated with the water inlet pipe; the filtering unit comprises a connecting pipe arranged on the water pipe line and located in the water inlet pipe, an annular frame arranged on the connecting pipe and a filter screen arranged on the inner surface of the annular frame. The connecting filtering device of the diesel tank heating circulating water tank is convenient for fixing and installing the filter screen in the annular frame through the clamping groove, the screw rod and the clamping block, is convenient for intercepting the water scale in the hot water by the filter screen, and when the clamping block is separated from the clamping groove by reversely rotating the screw rod, the annular moving plate will automatically pop out the filter screen from the annular frame under the action of the elastic force, so that the staff can conveniently take out the filter screen for replacement.

Description

Technical Field

[0001] This invention relates to the field of diesel tank technology, and more particularly to a connecting filter device for a diesel tank heating circulating water tank. Background Technology

[0002] There are many types of diesel fuel, such as No. 0 diesel, No. -10 diesel, and No. -35 diesel. The use of diesel fuel is affected by the weather. No. 0 diesel has a low freezing point and will freeze at sub-zero temperatures. It can only be used when the ambient temperature is above 4°C. When the temperature is below 4°C, it is generally necessary to switch to No. -35 diesel. However, No. -35 diesel is more expensive than No. 0 diesel and usually contains a higher sulfur content. It will produce more pollutants during combustion, which will have an adverse effect on the environment and air quality. Therefore, No. 0 fuel tanks are usually heated to maintain their use in extremely cold weather.

[0003] Diesel tanks are typically mounted directly on the diesel engine or vehicle chassis. Currently, heated diesel tanks generally use a water-circulation heating method. This involves placing a heat-conducting circulating water tank around the tank's perimeter and heating the water through circulation. Since the circulating water tank needs to circulate and heat the water, it usually needs to be connected to water pipes. However, existing circulating water tanks do not have a filtration system when connected to the water pipes. Because scale will form after the water is heated, if the scale cannot be filtered out, it will flow through the water pipes and the circulating water tank, adhering to the inner wall of the circulating water tank and reducing its thermal conductivity. This needs to be improved. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problem that the existing diesel tank heating circulating water tank connection filter device does not have a filter structure when the circulating water tank is connected to the water pipeline, and cannot intercept and treat the scale generated after heating, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a connecting filter device for a diesel tank heating circulating water tank. The purpose is to add a filter structure inside the circulating water tank when it is connected to the water pipeline, so as to intercept scale and facilitate the replacement of the filter screen when it becomes clogged.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a circulating water tank, including an inlet pipe disposed on one side of the circulating water tank, an outlet pipe disposed on the other side of the circulating water tank, and a water pipe disposed on one side of the circulating water tank and connected to the inlet pipe; and,

[0008] The filter unit includes a connecting pipe disposed on the water pipe and located inside the inlet pipe, an annular frame disposed on the connecting pipe, a filter screen disposed on the inner surface of the annular frame, a snap-fit ​​assembly disposed inside the annular frame and connected to the filter screen, an elastic assembly disposed inside the connecting pipe and connected to the snap-fit ​​assembly, and a sealing assembly disposed on the filter screen and cooperating with the elastic assembly.

[0009] The connecting unit includes a fixing component disposed on the water inlet pipe and a connecting component disposed on the water pipe and connected to the fixing component.

[0010] As a preferred embodiment of the connecting filter device for the diesel tank heating circulating water tank of the present invention, the snap-fit ​​assembly includes two openings on the annular frame, two slots on the filter screen, two screws inside the annular frame, and threaded blocks on the screws. A locking block is provided inside the slot, and a rotating plate is provided between the locking block and the threaded block. A limit rod that is slidably connected to the threaded block is provided inside the annular frame.

[0011] As a preferred embodiment of the connecting filter device for the diesel tank heating circulating water tank of the present invention, the elastic component includes an annular groove disposed on the connecting pipe, an annular fixed plate disposed inside the annular groove, and an annular movable plate disposed inside the annular groove and located on one side of the annular fixed plate. A connecting frame penetrating the annular fixed plate is disposed on the annular movable plate, and a return spring is disposed between the annular fixed plate and the annular movable plate and located on the outer periphery of the connecting frame.

[0012] As a preferred embodiment of the connecting filter device for the diesel tank heating circulating water tank of the present invention, wherein: a push plate is provided on the outer periphery of the screw and on one side of the threaded block, and a connecting rod connected to the annular moving plate is provided on the push plate.

[0013] As a preferred embodiment of the connecting filter device for the diesel tank heating circulating water tank of the present invention, the elastic component further includes a movable groove disposed on the connecting pipe and communicating with the annular groove, two placement grooves disposed on the annular movable plate, and a spring telescopic rod disposed inside the placement groove, wherein a limit block is fixedly connected to the spring telescopic rod.

[0014] As a preferred embodiment of the connecting filter device for the diesel tank heating circulating water tank of the present invention, the sealing assembly includes a first sealing ring disposed on the filter screen and located inside the connecting pipe, and a second sealing ring disposed inside the connecting pipe and adapted to the first sealing ring, wherein the first sealing ring is provided with an arc-shaped groove that cooperates with the limiting block.

[0015] As a preferred embodiment of the connecting filter device for the diesel tank heating circulating water tank of the present invention, the fixing component includes a first mounting plate disposed on the water inlet pipe, a second mounting plate disposed on the water pipe, a mounting groove disposed on the first mounting plate, and a fixing groove disposed inside the first mounting plate and communicating with the mounting groove.

[0016] As a preferred embodiment of the connecting filter device for the diesel tank heating circulating water tank of the present invention, the connecting assembly includes a convex ring disposed on the second mounting plate and adapted to the mounting groove, two rectangular grooves disposed inside the convex ring, and two sliding grooves disposed on the rectangular grooves.

[0017] As a preferred embodiment of the connecting filter device for the diesel tank heating circulating water tank of the present invention, the connecting assembly further includes a lead screw disposed inside the rectangular groove, and a rectangular plate disposed on the lead screw and adapted to the rectangular groove. A fixing plate is disposed inside the fixing groove, and a connecting rotating plate is disposed between the fixing plate and the rectangular plate.

[0018] As a preferred embodiment of the connecting filter device for the diesel tank heating circulating water tank of the present invention, wherein: the interior of the sliding groove and the fixed groove correspond to each other, and the sliding groove, the fixed groove and the fixed plate are all slidably connected.

[0019] The beneficial effects of this invention are as follows: The filter screen is conveniently fixed inside the annular frame by means of the slot, screw, and locking block, so that the filter screen is located between the water pipe and the water inlet pipe. Therefore, when the oil tank is heated by water circulation, the scale in the hot water is intercepted by the filter screen and cannot enter the circulating water tank, thus preventing scale from adhering to the inner wall of the circulating water tank and extending its service life. Furthermore, since the movement of the screw block will drive the push plate and the annular moving plate to move synchronously, when the screw is rotated in the opposite direction and the locking block is disengaged from the slot, the annular moving plate will be affected by the elastic force of the return spring and drive the filter screen to automatically pop out of the annular frame, making it convenient for the staff to remove and replace it. The operation is simple and easy to use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the filter unit of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the filter screen and the first sealing ring of the present invention.

[0025] Figure 5 This is a schematic diagram of the arc-shaped groove of the present invention.

[0026] Figure 6 This is a schematic diagram of the snap-fit ​​assembly of the present invention.

[0027] Figure 7 This is a schematic diagram of the structure of the elastic component of the present invention.

[0028] Figure 8 This is a schematic diagram of the structure of the annular moving plate of the present invention.

[0029] Figure 9 This is a schematic diagram of the structure of the fixing component of the present invention.

[0030] Figure 10 This is a schematic diagram of the structure of the fixing component and the connecting component of the present invention.

[0031] Figure 11 A schematic diagram of the heating system for heating the circulating water tank of the diesel tank. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0036] Example 1, referring to Figures 1-2 This invention provides a first embodiment of a diesel tank heating circulating water tank connection and filtration device. The device includes a circulating water tank 100, an inlet pipe 101 disposed on one side of the circulating water tank 100, an outlet pipe 102 disposed on the other side of the circulating water tank 100, and a water pipe 103 disposed on one side of the circulating water tank 100 and connected to the inlet pipe 101; and a filtration unit 200, including a connecting pipe 201 disposed on the water pipe 103 and located inside the inlet pipe 101, and an annular filter on the connecting pipe 201. The frame 202, the filter screen 203 disposed on the inner surface of the annular frame 202, the snap-fit ​​component 204 disposed inside the annular frame 202 and connected to the filter screen 203, the elastic component 205 disposed inside the connecting pipe 201 and connected to the snap-fit ​​component 204, and the sealing component 206 disposed on the filter screen 203 and cooperating with the elastic component 205; the connecting unit 300 includes a fixing component 301 disposed on the water inlet pipe 101 and a connecting component 302 disposed on the water pipe 103 and connected to the fixing component 301.

[0037] The inlet pipe 101 and the outlet pipe 102 are respectively connected to the two sides of the circulating water tank 100. The inlet pipe 101 and the water pipe 103 are tightly fitted together. One end of the water pipe 103 is connected to the connecting pipe 201, which is located inside the inlet pipe 101. The outer surface of the filter screen 203 is in contact with the inner surface of the annular frame 202.

[0038] Specifically, first, the filter screen 203 is inserted into the annular frame 202 by aligning the positions until the two structures of the sealing component 206 are connected. Then, the filter screen 203 and the sealing component 206 are fixed by the snap-fit ​​component 204 and the elastic component 205 to achieve a fixed connection of the filter screen 203. Finally, the water inlet pipe 101 is connected to the water pipe 103 by the fixing component 301 and the connecting component 302.

[0039] Example 2, refer to Figures 1-10 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the snap-fit ​​assembly 204 includes two openings on the annular frame 202, two slots 204b on the filter screen 203, two screws 204c inside the annular frame 202, and a threaded block 204d on the screws 204c. A snap-fit ​​block 204e is provided inside the slots 204b. A rotating plate 204f is provided between the snap-fit ​​block 204e and the threaded block 204d. A limiting rod 204g that is slidably connected to the threaded block 204d is provided inside the annular frame 202. The two openings are located on the upper and lower sides of the inner surface of the annular frame 202, and the two slots 204b are located on the upper and lower sides of the outer surface of the filter screen 203, with the openings and slots 204b corresponding to each other. One end of the screw 204c is rotatably connected to one side of the inner surface of the annular frame 202, and the other end of the screw 204c passes through the annular frame 202 and is fixedly connected to a handle. The threaded block 204d is threadedly connected to the screw 204c, and the threaded block 204d is slidably connected to the limiting rod 204g. The limiting rod 204g can limit the movement direction of the threaded block 204d, making it only able to move left and right. Both ends of the rotating plate 204f are rotatably connected to the slot 204e and the threaded block 204d respectively through rotating parts.

[0040] Furthermore, the elastic component 205 includes an annular groove 205a disposed on the connecting pipe 201, an annular fixing plate 205b disposed inside the annular groove 205a, and an annular moving plate 205c disposed inside the annular groove 205a and located on one side of the annular fixing plate 205b. A connecting frame 205d is disposed on the annular moving plate 205c, penetrating the annular fixing plate 205b. A return spring 205e is disposed between the annular fixing plate 205b and the annular moving plate 205c and located on the outer periphery of the connecting frame 205d. Because the annular moving plate 205c is affected by the elastic force of the return spring 205e, the push plate 205f will always maintain a close contact with the threaded block 204d. Therefore, when the screw 204c rotates and drives the threaded block 204d to move, the push plate 205f and the annular moving plate 205c will also move accordingly.

[0041] Furthermore, a push plate 205f is provided on the outer periphery of the screw 204c and on one side of the threaded block 204d. A connecting rod 205g connected to the annular moving plate 205c is provided on the push plate 205f. The push plate 205f is annular and slides on the inner surface of the annular frame 202.

[0042] Furthermore, the elastic component 205 also includes a movable groove 205a-1 disposed on the connecting pipe 201 and communicating with the annular groove 205a, two placement grooves 205a-2 disposed on the annular moving plate 205c, and a spring telescopic rod 205a-3 disposed inside the placement groove 205a-2, with a limiting block 205a-4 fixedly connected to the spring telescopic rod 205a-3. There are two movable grooves 205a-1, respectively disposed on the upper and lower sides of the inner surface of the connecting pipe 201, and the two spring telescopic rods 205a-3 and the limiting block 205a-4 are arranged opposite to each other.

[0043] Furthermore, the sealing assembly 206 includes a first sealing ring 206a disposed on the filter screen 203 and located inside the connecting pipe 201, and a second sealing ring disposed inside the connecting pipe 201 and adapted to the first sealing ring 206a. The first sealing ring 206a is provided with an arc-shaped groove 206c that cooperates with the limiting block 205a-4. The first sealing ring 206a and the second sealing ring enhance the tightness and sealing of the device connection. The side of the arc-shaped groove 206c away from the filter screen 203 is curved, facilitating the removal and replacement of the filter screen 203 by personnel.

[0044] Furthermore, the fixing component 301 includes a first mounting plate 301a disposed on the water inlet pipe 101, a second mounting plate 301b disposed on the water pipe 103, a mounting groove 301c disposed on the first mounting plate 301a, and a fixing groove 301d disposed inside the first mounting plate 301a and communicating with the mounting groove 301c. The first mounting plate 301a and the second mounting plate 301b are fitted together, and the mounting groove 301c is annular.

[0045] Furthermore, the connecting assembly 302 includes a convex ring 302a disposed on the second mounting plate 301b and adapted to the mounting groove 301c, two rectangular grooves 302b disposed inside the convex ring 302a, and two sliding grooves 302c disposed on the rectangular grooves 302b. Both the convex ring 302a and the mounting grooves 301c are annular.

[0046] Furthermore, the connecting assembly 302 also includes a lead screw 302d disposed inside the rectangular groove 302b, and a rectangular plate 302e disposed on the lead screw 302d and adapted to the rectangular groove 302b. A fixing plate 302f is disposed inside the fixing groove 301d, and a connecting rotating plate 302g is disposed between the fixing plate 302f and the rectangular plate 302e. One end of the lead screw 302d is rotatably connected to one side of the inner surface of the rectangular groove 302b via a bearing, and the other end of the lead screw 302d passes through the convex ring 302a and the second mounting plate 301b in sequence and extends to one side of the second mounting plate 301b. The shape of the rectangular plate 302e fits the inner wall of the rectangular groove 302b and has a limiting function itself, so no additional limiting can be performed. Both ends of the connecting rotating plate 302g are rotatably connected to the fixing plate 302f and the rectangular plate 302e respectively via rotating parts.

[0047] Furthermore, the interiors of the sliding groove 302c and the fixed groove 301d correspond to each other, and the sliding groove 302c, the fixed groove 301d, and the fixed plate 302f are all slidably connected. The filter screen 203 has two hooks on the side near the circulating water tank 100, allowing operators to easily manipulate the filter screen 203.

[0048] In use, first align the filter screen 203 and guide it into the annular frame 202 until the first sealing ring 206a is fully inserted into the second sealing ring. At this point, rotate the screw 204c to move the threaded block 204d, which in turn causes the rotating plate 204f to rotate, allowing the locking block 204e to slide in the opening and enter the locking groove 204b. Since the movement of the threaded block 204d will cause the push plate 205f, the connecting rod 205g, and the annular moving plate 205c to move synchronously, the movement of the annular moving plate 205c will compress the return spring 205e, and the movement of the annular moving plate 205c will also drive the spring extension rod. 205a-3 moves in the movable groove 205a-1. When the locking block 204e enters the locking groove 204b, the limiting block 205a-4 will also enter the arc groove 206c. At this time, the filter screen 203 can be fixedly installed. Then, align the positions of the mounting groove 301c and the convex ring 302a and attach the first mounting plate 301a and the second mounting plate 301b together. Then, rotate the screw 302d to drive the rectangular plate 302e to move, so that the connecting rotating plate 302g rotates and drives the fixing plate 302f into the fixing groove 301d, thus completing the connection between the water inlet pipe 101 and the water pipe 103.

[0049] As the circulating water tank 100 is used for heating for a long time, scale gradually accumulates inside, causing the filter screen 203 to become clogged and unable to flow. When the screw 302d is rotated in the reverse direction, the fixing plate 302f is disengaged from the fixing groove 301d, and the inlet pipe 101 and the water pipe 103 are separated. Then, the screw 204c is rotated in the reverse direction to move the threaded block 204d, causing the locking block 204e to disengage from the locking groove 204b. After the threaded block 204d moves, the push plate 205f, the connecting rod 205g, and the annular moving plate 205c will automatically rebound due to the elastic force of the return spring 205e. Then, the spring telescopic rod 205a-3 and the limiting block 205a-4 will be locked in the arc groove 206c, bringing the filter screen 203 out of the annular frame 202 a distance. At this time, the filter screen 203 can be directly pulled out and replaced by hook rod.

[0050] The remaining structure is the same as that in Example 1.

[0051] Example 3, referring to Figure 11 The third embodiment of the present invention provides a heating system for heating a diesel tank circulating water tank, comprising the following steps:

[0052] A circulating water tank 100 with an external oil-water separator is installed in the bus's fuel tank, using circulating water heated by the engine to heat the fuel tank. This system consists of a circulating water system, an engine water tank, a water circulation heating pump tank, water pipes 103, a temperature control valve, and an exhaust valve. The outer wall of the water tank is made of iron or resin, while the inner liner is made of aluminum alloy. The circulating water is located outside the fuel tank and connected to the engine cooling water pipes 103. During the heating process, the water pump draws circulating water from the engine water tank and sends it through water pipes 103 into the external water tank. Through contact with the fuel tank wall, the water heats the fuel inside the tank. After a certain period of circulating water supply, the temperature inside the fuel tank gradually rises. An exhaust valve is also installed to prevent the pressure inside the fuel tank from increasing due to excessively high water temperature.

[0053] The heating process is divided into two types: First, when the diesel fuel has frozen, the water is heated to a certain temperature by a water circulation heating pump, and then circulated to heat the fuel tank to a temperature suitable for starting the vehicle. After starting the vehicle, when the temperature control valve detects that the engine water tank temperature is sufficient to supply water to the fuel tank, the system switches to supply water to the engine water tank; Second, when the temperature control valve detects that the engine water tank temperature is sufficient to heat the oil, the system prioritizes using the circulating water from the water tank to heat the fuel tank.

[0054] The remaining structure is the same as that in Example 2.

[0055] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims. Furthermore, for the purpose of providing a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features not relevant to the currently considered best mode for carrying out the invention, or those features not relevant to implementing the invention) may be omitted.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A filter device for connecting a diesel tank heating circulating water tank, characterized in that: include, The circulating water tank (100) includes an inlet pipe (101) disposed on one side of the circulating water tank (100), an outlet pipe (102) disposed on the other side of the circulating water tank (100), and a water pipe (103) disposed on one side of the circulating water tank (100) and connected to the inlet pipe (101); and, The filter unit (200) includes a connecting pipe (201) disposed on the water pipe (103) and located inside the water inlet pipe (101), an annular frame (202) disposed on the connecting pipe (201), a filter screen (203) disposed on the inner surface of the annular frame (202), a snap-fit ​​assembly (204) disposed inside the annular frame (202) and connected to the filter screen (203), an elastic assembly (205) disposed inside the connecting pipe (201) and connected to the snap-fit ​​assembly (204), and a sealing assembly (206) disposed on the filter screen (203) and cooperating with the elastic assembly (205). The connecting unit (300) includes a fixing component (301) disposed on the water inlet pipe (101) and a connecting component (302) disposed on the water pipe (103) and connected to the fixing component (301). The snap-fit ​​assembly (204) includes two openings on the annular frame (202), two slots (204b) on the filter screen (203), two screws (204c) inside the annular frame (202), and a threaded block (204d) on the screws (204c). A locking block (204e) is provided inside the slots (204b), and a rotating plate (204f) is provided between the locking block (204e) and the threaded block (204d). A limiting rod (204g) is provided inside the annular frame (202) and is slidably connected to the threaded block (204d). The elastic component (205) includes an annular groove (205a) disposed on the connecting pipe (201), an annular fixing plate (205b) disposed inside the annular groove (205a), and an annular moving plate (205c) disposed inside the annular groove (205a) and located on one side of the annular fixing plate (205b). A connecting frame (205d) penetrating the annular fixing plate (205b) is disposed on the annular moving plate (205c). A return spring (205e) is disposed between the annular fixing plate (205b) and the annular moving plate (205c) and located on the outer periphery of the connecting frame (205d). A push plate (205f) is provided on the outer periphery of the screw (204c) and on one side of the threaded block (204d). A connecting rod (205g) connected to the annular moving plate (205c) is provided on the push plate (205f). The elastic component (205) further includes a movable groove (205a-1) disposed on the connecting pipe (201) and connected to the annular groove (205a), two placement grooves (205a-2) disposed on the annular movable plate (205c), and a spring telescopic rod (205a-3) disposed inside the placement groove (205a-2), wherein a limit block (205a-4) is fixedly connected to the spring telescopic rod (205a-3); The sealing assembly (206) includes a first sealing ring (206a) disposed on the filter screen (203) and located inside the connecting pipe (201), and a second sealing ring disposed inside the connecting pipe (201) and adapted to the first sealing ring (206a). The first sealing ring (206a) is provided with an arc-shaped groove (206c) that cooperates with the limiting block (205a-4).

2. The connecting filter device for the diesel tank heating circulating water tank according to claim 1, characterized in that: The fixing component (301) includes a first mounting plate (301a) disposed on the water inlet pipe (101), a second mounting plate (301b) disposed on the water pipe (103), a mounting groove (301c) disposed on the first mounting plate (301a), and a fixing groove (301d) disposed inside the first mounting plate (301a) and communicating with the mounting groove (301c).

3. The connecting filter device for the diesel tank heating circulating water tank according to claim 2, characterized in that: The connecting assembly (302) includes a convex ring (302a) disposed on the second mounting plate (301b) and adapted to the mounting groove (301c), two rectangular grooves (302b) disposed inside the convex ring (302a), and two sliding grooves (302c) disposed on the rectangular grooves (302b).

4. The connecting filter device for the diesel tank heating circulating water tank according to claim 3, characterized in that: The connecting assembly (302) further includes a lead screw (302d) disposed inside the rectangular groove (302b), and a rectangular plate (302e) disposed on the lead screw (302d) and adapted to the rectangular groove (302b). A fixing plate (302f) is disposed inside the fixing groove (301d), and a connecting plate (302g) is disposed between the fixing plate (302f) and the rectangular plate (302e).

5. The connecting filter device for the diesel tank heating circulating water tank according to claim 3 or 4, characterized in that: The interior of the sliding groove (302c) corresponds to that of the fixed groove (301d), and the sliding groove (302c), the fixed groove (301d) and the fixed plate (302f) are all slidably connected.

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