Dustproof structure of pre-amplifier for boiler instrument

Abstract

The utility model relates to the technical field of boiler instruments, and discloses a dustproof structure of a pre-amplifier for a boiler instrument, which comprises a base, a first fixing frame is arranged at the top of the base, a first sealing gasket is fixedly connected to the bottom of the first fixing frame, a second fixing frame is arranged in the first fixing frame, and the second fixing frame is fixedly connected to the top of the base. A dustproof box is fixedly connected to the top of the first fixing frame, four dustproof nets are fixedly connected to the dustproof box, a cover plate is arranged at the top of the dustproof box, the dustproof box and the cover plate are connected through hinges, clamping grooves are formed in the same sides of the first fixing frame and the second fixing frame, and clamping blocks are arranged in the clamping grooves in the second fixing frame. The outer wall of the first fixing frame is fixedly connected with two limiting rods. The dustproof box is easy to operate, the dustproof box is convenient to mount and dismount, the time and labor cost required by maintenance are reduced, equipment can be effectively protected from being influenced by impurities such as dust, and the running reliability of the equipment is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler instrument technical field especially relates to a dustproof structure of preamplifier for boiler instrument. BACKGROUND

[0002] Through the retrieval, the patent of Chinese patent authorization number CN215421133U discloses a dustproof structure of preamplifier for boiler instrument, including the bottom plate, the upper surface middle part of the bottom plate is equipped with the installation slot, the upper surface of the bottom plate is equipped with the fixed groove, the dustproof structure of preamplifier for boiler instrument can make dustproof box can have good ventilation effect while still having good dustproof function through the external ventilation groove and internal ventilation groove of staggered opening, through fixed groove, clamping plate, card hole and fixed hole can make dustproof box can be quickly disassembled and installed with the bottom plate, so that the preamplifier for boiler instrument can be conveniently maintained, through the upper locking plate and lower locking plate can make the cooperation installation between the cover plate and dustproof box more fastening, through the sealing ring can make the sealing effect between the cover plate and dustproof box better, so that the dustproof structure of preamplifier for boiler instrument can effectively protect the preamplifier for boiler instrument from dust.

[0003] The dustproof structure of preamplifier for boiler instrument in the above patent has the following deficiencies: the fixed bolt is used to pass through the card hole and the fixed hole to cooperate and install, thereby completing the fixed installation work of the dustproof box, professional tools are needed when operating, in order to ensure that the preamplifier for boiler instrument can stably run, regular maintenance is needed, such as regular inspection of the connection stability of signal lines and power lines, cleaning of instruments and their surrounding environment, regular calibration of the preamplifier and other maintenance work, and the disassembly of the bolt is troublesome, which increases the workload and time of maintenance, and needs to be solved urgently. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in the prior art and provides a dustproof structure of preamplifier for boiler instrument.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a dustproof structure of preamplifier for boiler instrument, including base, the top of base is provided with first fixed frame, the bottom of first fixed frame is fixedly connected with first sealing pad, the inside of first fixed frame is provided with second fixed frame, second fixed frame is fixedly connected the top of base, the top of first fixed frame is fixedly connected with dustproof box, four dustproof nets are fixedly connected on dustproof box, the top of dustproof box is provided with cover plate, dustproof box and cover plate are connected through hinge, the bottom of cover plate is provided with sealing pad, the same side of first fixed frame and second fixed frame all is seted up clamping groove, the clamping groove on second fixed frame is provided with clamping block, the outer wall of first fixed frame is fixedly connected with two limit rods, two limit rods all are sleeved with same sleeve plate, sleeve plate is connected limit rod, limit rod is sleeved with first spring, clamping block is fixedly connected sleeve plate, clamping block is fixedly connected with second sealing pad on the side close to first fixed frame, the side of sleeve plate away from first fixed frame is fixedly connected with handle, because the technical means that the position of first fixed frame is limited by clamping block and is inserted into the clamping groove on second fixed frame is adopted, after the position of first fixed frame is limited, the position of dustproof box can be limited, that is, dustproof box can be installed, then pull handle again and make clamping block remove from the clamping groove on second fixed frame, that is, the limitation can be cancelled, dustproof box can be taken down, preamplifier is maintained, effectively solve the problem that the fixed bolt is used to cooperate and install through the clamping hole and fixed hole in the above device in the background art, thereby complete the fixed installation of dustproof box, need professional tool when operating, and it is troublesome to remove bolt, increase the workload and time of maintenance, further realize simple operation, convenient installation and disassembly of dustproof box, reduce the time and labor cost required for maintenance, can effectively protect the equipment from the influence of dust and other impurities, and ensure the reliability of equipment operation.

[0007] As a further scheme of the utility model, four mounting holes are formed in the base.

[0008] As a further scheme of the utility model, two positioning rods are fixedly connected to the top of the end of the base away from the handle, both of the positioning rods are sleeved with the same fixing plate, two positioning holes are formed in the fixing plate, and the positioning holes are matched with the positioning rods.

[0009] As a further scheme of the utility model, an observation window is arranged on the cover plate.

[0010] As a further scheme of the utility model, a first square plate is fixedly connected to the side of the cover plate close to the handle, a second square plate is fixedly connected to the bottom of the first square plate, a plug rod is arranged on the second square plate, and a groove matched with the plug rod is formed in the second square plate.

[0011] As a further scheme of the utility model, the inserting rod is sleeved with a third square plate, the inserting rod is slidingly connected with the third square plate, and the third square plate is fixedly connected with the dustproof box.

[0012] As a further scheme of the utility model, the outer wall of the inserting rod is fixedly connected with a circular ring, the circular ring is provided with a second spring on the side close to the third square plate, the second spring is sleeved on the inserting rod, and one side of the inserting rod is fixedly connected with a pull rod.

[0013] The utility model discloses the beneficial effects are:

[0014] The utility model discloses: because adopt the technical means that the clamping block is clamped into the clamping groove on the second fixed frame and the position of the first fixed frame is limited, so after limiting the position of the first fixed frame, the position of the dustproof box can be limited, the dustproof box can be installed, the clamping block is removed from the clamping groove on the second fixed frame by pulling the handle again, the limitation can be removed, the dustproof box can be removed, the preamplifier is maintained, the above-mentioned device uses fixed bolt to pass through the clamping hole and the fixed hole to cooperate and installs, thereby completing the fixed installation work of the dustproof box, professional tools are needed when operating, and it is more troublesome to disassemble the bolt, the work load and time of maintenance are increased, and the technical effects that simple operation, convenient installation and disassembly of the dustproof box, reducing the time and manpower cost required for maintenance, effectively protecting the equipment from the influence of dust and other impurities, and guaranteeing the reliability of equipment operation are realized. ACCURACY OF DRAWINGS

[0015] Figure 1 It is a kind of preamplifier's dustproof structure for boiler instrument that the utility model provides the three-dimensional structure schematic diagram;

[0016] Figure 2 It is a kind of preamplifier's dustproof structure for boiler instrument that the utility model provides the local structure schematic diagram;

[0017] Figure 3 It is a kind of preamplifier's dustproof structure for boiler instrument that the utility model provides the structure schematic diagram at first fixed frame;

[0018] Figure 4 It is a kind of preamplifier's dustproof structure for boiler instrument that the utility model provides the local expansion structure schematic diagram;

[0019] Figure 5 It is a kind of preamplifier's dustproof structure for boiler instrument that the utility model provides the expansion structure schematic diagram at handle;

[0020] Figure 6 It is a kind of preamplifier's dustproof structure for boiler instrument that the utility model provides the structure schematic diagram at second square plate;

[0021] Figure 7 This is a schematic diagram showing the unfolded structure of the second square plate of the dustproof structure of the preamplifier for boiler instruments proposed in this utility model.

[0022] In the diagram: 1. Base; 101. Mounting hole; 2. First fixing frame; 201. First sealing gasket; 3. Second fixing frame; 4. Dustproof box; 5. Dustproof net; 6. Cover plate; 7. Observation window; 8. Slot; 9. Limiting rod; 10. Sleeve plate; 11. First spring; 12. Locking block; 13. Second sealing gasket; 14. Handle; 15. Fixing plate; 16. Positioning hole; 17. Positioning rod; 18. First square plate; 19. Second square plate; 20. Insert rod; 21. Third square plate; 22. Ring; 23. Pull rod; 24. Second spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and implementing regulations.

[0025] Reference Figure 1 - Figure 7A dustproof structure for a preamplifier used in boiler instruments includes a base 1, a first fixing frame 2 on the top of the base 1, a first sealing gasket 201 fixedly connected to the bottom of the first fixing frame 2, a second fixing frame 3 inside the first fixing frame 2, the second fixing frame 3 fixedly connected to the top of the base 1, a dustproof box 4 fixedly connected to the top of the first fixing frame 2, four dustproof nets 5 fixedly connected to the dustproof box 4, a cover plate 6 on the top of the dustproof box 4, the dustproof box 4 and the cover plate 6 connected by a hinge, a sealing gasket at the bottom of the cover plate 6, slots 8 on the same side of both the first fixing frame 2 and the second fixing frame 3, a locking block 12 in the slot 8 of the second fixing frame 3, two limiting rods 9 fixedly connected to the outer wall of the first fixing frame 2, both limiting rods 9 fitted with the same sleeve plate 10, the sleeve plate 10 slidably connected to the limiting rods 9, the limiting rods 9 fitted with a first spring 11, the locking block 12 fixedly connected to the sleeve plate 10, and a first sealing gasket 11 fixedly connected to the side of the locking block 12 closest to the first fixing frame 2. The two sealing gaskets 13 and the sleeve plate 10 are fixedly connected to a handle 14 on the side away from the first fixed frame 2. Because a locking block is used to limit the position of the first fixed frame by engaging a slot on the second fixed frame, the position of the dust box can be limited after the position of the first fixed frame is restricted, thus allowing the dust box to be installed. Pulling the handle again removes the locking block from the slot on the second fixed frame, releasing the restriction and allowing the dust box to be removed for preamplifier maintenance. This effectively solves the problem mentioned in the background art where the aforementioned device uses fixing bolts to fit through the locking holes and fixing holes for installation, requiring specialized tools and making bolt removal cumbersome, increasing maintenance workload and time. This solution achieves simple operation, easy installation and removal of the dust box, reduces maintenance time and labor costs, effectively protects the equipment from dust and other impurities, and ensures the reliability of equipment operation.

[0026] In this embodiment, the base 1 has four mounting holes 101, which are used to mount the base 1 onto the outside of the boiler instrument preamplifier.

[0027] In this embodiment, two positioning rods 17 are fixedly connected to the top of the base 1 at the end away from the handle 14. Both positioning rods 17 are fitted with the same fixing plate 15. The fixing plate 15 has two positioning holes 16, which are adapted to the positioning rods 17.

[0028] In this embodiment, the cover plate 6 is provided with an observation window 7, which is a transparent window that allows observation of the preamplifier.

[0029] In this embodiment, a first square plate 18 is fixedly connected to the cover plate 6 on the side near the handle 14, and a second square plate 19 is fixedly connected to the bottom of the first square plate 18. A rod 20 is inserted through the second square plate 19. By inserting the rod 20 into the groove on the second square plate 19, the position of the second square plate 19 can be limited, and the cover plate 6 can be closed. The second square plate 19 has a groove that matches the rod 20.

[0030] In this embodiment, the insertion rod 20 is fitted with a third-party shaped plate 21, the insertion rod 20 is slidably connected to the third-party shaped plate 21, and the third-party shaped plate 21 is fixedly connected to the dustproof box 4.

[0031] In this embodiment, a ring 22 is fixedly connected to the outer wall of the insertion rod 20. A second spring 24 is provided on the side of the ring 22 near the second square plate 21. The elastic force provided by the second spring 24 can make the insertion rod 20 stably located inside the second square plate 19. The second spring 24 is sleeved on the insertion rod 20. A pull rod 23 is fixedly connected to one side of the insertion rod 20.

[0032] Working principle: In use, the base 1 is placed on the outside of the boiler instrument preamplifier, and screws are used to fix the base 1 through the mounting hole 101. The positioning hole 16 is aligned with the positioning rod 17, and the fixing plate 15 is placed on the positioning rod 17. Pressing the dust box 4 causes it to descend, which in turn causes the first fixing frame 2 to descend. The first fixing frame 2 then causes the limit rod 9 to descend, which in turn causes the sleeve plate 10 to descend. The sleeve plate 10 then causes the locking block 12 to descend until the inclined surface of the locking block 12 contacts the top of the second fixing frame 3. Pressing the dust box 4 continues. When the locking block 12 moves a certain distance toward the handle 14, the sleeve 10 moves, and the sleeve 10 compresses the first spring 11, causing the first spring 11 to contract. When the locking block 12 moves to the position of the slot 8 on the second fixed frame 3, the first spring 11 extends, allowing the locking block 12 to move into the slot 8 on the second fixed frame 3, thus limiting the position of the first fixed frame 2 and restricting the position of the dust box 4. The dust box 4 can then be installed. After closing the cover plate 6, pull the lever 23 to move it. Moving the insertion rod 20 will cause the ring 22 to move, which in turn will compress the second spring 24, causing it to contract. After the cover plate 6 is closed, releasing the pull rod 23 will extend the second spring 24, allowing the insertion rod 20 to move and insert into the groove on the second square plate 19, thus limiting the position of the second square plate 19 and the cover plate 6. The operating status of the preamplifier can be observed through the observation window 7. The dustproof mesh 5 effectively prevents dust from entering the interior. The first sealing gasket 201 and the second... The sealing gasket 13 and the sealing gasket at the bottom of the cover plate 6 are effectively sealed. Pulling the lever 23 again will release the restriction on the second square plate 19 and open the cover plate 6. When maintenance is required on the preamplifier for boiler instruments, such as checking the connection stability of the signal line and power line, cleaning the surrounding environment, or calibrating the preamplifier, a larger operating space is needed. Pulling the handle 14 will move the sleeve plate 10, which will drive the locking block 12 to move out of the slot 8 on the second fixed frame 3, thereby releasing the limit. The dust box 4 can then be removed for maintenance work.

[0033] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dustproof structure for a preamplifier used in boiler instruments, comprising a base (1), characterized in that, The base (1) has a first fixing frame (2) on top, and a first sealing gasket (201) is fixedly connected to the bottom of the first fixing frame (2). A second fixing frame (3) is provided inside the first fixing frame (2), and the second fixing frame (3) is fixedly connected to the top of the base (1). A dustproof box (4) is fixedly connected to the top of the first fixing frame (2), and four dustproof nets (5) are fixedly connected to the dustproof box (4). A cover plate (6) is provided on the top of the dustproof box (4), and the dustproof box (4) and the cover plate (6) are connected by a hinge. A sealing gasket is provided at the bottom of the cover plate (6). The first fixing frame (2) and the second fixing frame (3) are fixedly connected to the base (1). On the same side of the first fixed frame (2), there are slots (8). A locking block (12) is provided in the slot (8) on the second fixed frame (3). Two limiting rods (9) are fixedly connected to the outer wall of the first fixed frame (2). The two limiting rods (9) are fitted with the same sleeve plate (10). The sleeve plate (10) is slidably connected to the limiting rods (9). The limiting rods (9) are fitted with a first spring (11). The locking block (12) is fixedly connected to the sleeve plate (10). The locking block (12) is fixedly connected to a second sealing gasket (13) on the side close to the first fixed frame (2). The sleeve plate (10) is fixedly connected to a handle (14) on the side away from the first fixed frame (2).

2. The dustproof structure of the preamplifier for boiler instruments according to claim 1, characterized in that, The base (1) has four mounting holes (101).

3. The dustproof structure of the preamplifier for boiler instruments according to claim 2, characterized in that, The base (1) has two positioning rods (17) fixedly connected to the top of the end away from the handle (14). Both positioning rods (17) are fitted with the same fixing plate (15). The fixing plate (15) has two positioning holes (16) that are adapted to the positioning rods (17).

4. The dustproof structure of the preamplifier for boiler instruments according to claim 1, characterized in that, An observation window (7) is provided on the cover plate (6).

5. The dustproof structure of the preamplifier for boiler instruments according to claim 4, characterized in that, The cover plate (6) has a first square plate (18) fixedly connected to the side near the handle (14), and a second square plate (19) fixedly connected to the bottom of the first square plate (18). A rod (20) is inserted through the second square plate (19), and a groove adapted to the rod (20) is opened on the second square plate (19).

6. The dustproof structure of the preamplifier for boiler instruments according to claim 5, characterized in that, The insertion rod (20) is fitted with a third-party shaped plate (21), the insertion rod (20) is slidably connected to the third-party shaped plate (21), and the third-party shaped plate (21) is fixedly connected to the dustproof box (4).

7. The dustproof structure of the preamplifier for boiler instruments according to claim 6, characterized in that, A ring (22) is fixedly connected to the outer wall of the insertion rod (20). A second spring (24) is provided on the side of the ring (22) near the third triangular plate (21). The second spring (24) is sleeved on the insertion rod (20). A pull rod (23) is fixedly connected to one side of the insertion rod (20).

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