Negative pressure fan capable of being conveniently fixed to outer wall

Abstract

The utility model relates to the technical field of negative pressure fans, and discloses a negative pressure fan convenient to fix an outer wall, which comprises a negative pressure fan body, positioning mechanisms are arranged on the left side and the right side of the negative pressure fan body, and a fixing mechanism is arranged on the surface of the negative pressure fan body. Through a positioning mechanism, the negative pressure fan body is placed in a formed wall hole, the front face of a rectangular limiting ring is tightly attached to the wall face, the distance of the negative pressure fan body in the wall hole is measured through a measuring tape, two rotating sleeves are rotated after measurement, two bidirectional screw rods are rotated, and the negative pressure fan body is positioned in the wall hole. The rotation of the two-way screw rod can drive two moving plates in threaded connection with the surface of the two-way screw rod to move in opposite directions, so that two fixed cylinders move in opposite directions until the other ends of the two fixed cylinders tightly abut against the interior of a wall hole, the negative-pressure fan body is positioned, the negative-pressure fan body cannot move randomly in the wall hole, and the negative-pressure fan body is prevented from moving in the wall hole. And therefore, the negative pressure fan body is more convenient to mount.

Description

TECHNICAL FIELD

[0001] The utility model relates to negative pressure fan technical field, concretely is a kind of negative pressure fan convenient for external wall fixed. BACKGROUND

[0002] Negative pressure fan is the latest type of ventilator, belongs to axial fan, because mainly applied to negative pressure type ventilation cooling engineering and called negative pressure fan, negative pressure type ventilation cooling engineering contains ventilation and cooling two aspects of meaning, ventilation and cooling problem is solved simultaneously, negative pressure fan is also applied to positive pressure type water curtain environmental protection air conditioner, positive pressure air supply, positive pressure air blowing and other fields.

[0003] According to the announcement number CN 216199161 U a kind of negative pressure fan convenient for external wall fixed, belong to negative pressure fan field.The utility model includes installation cylinder, installation simple week side is equipped with several installation screw holes, installation simple front end surface is fixedly connected with first connecting plate, first connecting plate front end surface is threadedly connected with second connecting plate, second connecting plate front end surface is fixedly connected with fan blade simple.

[0004] The device can fix the installation simple on the wall body through the installation screw hole, and then install the remaining parts through the installation simple in sequence, so that the construction personnel can install single component once, the installation time is relatively long, but the operation is more convenient and simple when installing, the safety is greatly improved, and a part of components can be pre-assembled on the ground according to the site condition and then installed, to improve the installation speed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of negative pressure fan convenient for external wall fixed to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of negative pressure fan convenient for external wall fixed, including negative pressure fan body, the left and right sides of the negative pressure fan body are provided with positioning mechanism, the surface of the negative pressure fan body is provided with fixed mechanism;

[0007] The positioning mechanism includes first fixed frame, the first fixed frame is fixedly connected to the left and right sides of negative pressure fan body, the upper and lower sides in the first fixed frame are provided with bidirectional screw rod, the surface of the bidirectional screw rod is fixedly connected with fixed sleeve in middle, the surface of the bidirectional screw rod is symmetrically screw-connected with moving plate up and down, the side of the moving plate away from the first fixed frame is fixedly connected with fixed cylinder, the upper and lower sides of the first fixed frame are fixedly connected with limit rod close to the negative pressure fan body.

[0008] Preferably, the first fixed frame is provided with holes matched with the bidirectional screw on the upper and lower sides, and the bidirectional screw is connected to the holes by penetrating and rotating.

[0009] Preferably, the moving plate is provided with holes matched with the limiting rod on the side close to the first fixed frame, and the moving plate is connected to the limiting rod by sliding up and down through the holes, the limiting rod limits the moving plate, and the moving plate moves along with the rotation of the bidirectional screw, and the inner diameter of the fixed cylinder is greater than the diameter of the bidirectional screw.

[0010] Preferably, the fixing mechanism comprises a rectangular limiting ring, the rectangular limiting ring is fixedly connected to the surface of the negative pressure fan body close to the back, the front surface of the rectangular limiting ring is fixedly connected with a positioning plate on the left and right sides symmetrically, the surface of the negative pressure fan body is slidably connected with a rectangular sliding ring, the front surface of the rectangular sliding ring is fixedly connected with a second fixed frame symmetrically up and down, the left and right sides of the second fixed frame are provided with a plug rod, the side close to the second fixed frame of the positioning plate is provided with a plug hole corresponding to the plug rod, the surface of the plug rod is fixedly connected with a fixed ring in the middle, the front surface of the second fixed frame is fixedly connected with a fixed plate symmetrically left and right, the surface of the plug rod is sleeved with a spring between the fixed ring and the fixed plate, the other end of the plug rod is fixedly connected with a sliding plate, and the front surface of the second fixed frame is provided with a sliding groove.

[0011] Preferably, the front surface of the rectangular sliding ring is provided with a groove matched with the positioning plate, and the surface of the positioning plate is slidably connected in the groove.

[0012] Preferably, the left and right sides of the second fixed frame and the right side of the fixed plate are provided with holes matched with the plug rod, and the surface of the plug rod penetrates and is slidably connected in the holes.

[0013] Preferably, one end of the spring is fixedly connected to one side of the fixed ring, the other end of the spring is fixedly connected to the side of the fixed plate away from the sliding plate, and the left and right sides of the sliding plate are slidably connected in the sliding groove.

[0014] Compared with the prior art, the negative pressure fan convenient for fixing the outer wall has the following beneficial effects:

[0015] 1. The negative pressure fan convenient for fixing on the outer wall, through the positioning mechanism, the negative pressure fan body is placed in the wall hole which is opened, the front surface of the rectangular limiting ring is tightly attached to the wall surface, the distance of the negative pressure fan body in the wall hole is measured by using a tape measure, after the measurement, the two rotating sleeves are rotated, the two bidirectional screw rods are rotated, the two moving plates which are connected with the bidirectional screw rods by threads are moved towards each other, so that the two fixed barrels are moved towards each other, until the other end of the two fixed barrels tightly abuts against the inside of the wall hole, so that the negative pressure fan body is positioned, and the negative pressure fan body cannot be moved randomly in the wall hole, so that the negative pressure fan body is more convenient to install.

[0016] 2. The negative pressure fan convenient for fixing on the outer wall, through the fixing mechanism, after the negative pressure fan body is positioned, the rectangular sliding ring is slid to the surface of the negative pressure fan body, at the same time, the surface of the positioning plate is also slid into the groove opened on the front surface of the rectangular sliding ring, in the sliding process of the rectangular sliding ring, the two sliding plates are pressed by hand, the two sliding plates are moved towards each other, so that the two inserting rods are moved towards each other, at the same time, the movement of the inserting rods compresses the springs, when the back surface of the rectangular sliding ring is attached to the wall surface, the two sliding plates are released, at this time, the two inserting rods are reversely moved towards each other by the elastic force of the springs, so that the other end of the inserting rod is inserted into the insertion hole, so that the positioning plate and the rectangular limiting ring are fixed, and at the same time, the negative pressure fan body can be stably fixed in the wall hole. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor:

[0018] Figure 1 It is a back perspective view of the negative pressure fan body of the structure of the present application;

[0019] Figure 2 It is a front perspective view of the negative pressure fan body of the structure of the present application;

[0020] Figure 3 It is a perspective view of the positioning mechanism of the structure of the present application;

[0021] Figure 4 It is a perspective view of the limiting rod and the rotating sleeve of the structure of the present application;

[0022] Figure 5 It is a perspective view of the fixing mechanism of the structure of the present application;

[0023] Figure 6The utility model discloses a structure fixed ring and spring three-dimensional schematic view.

[0024] In the drawing: 1, negative pressure fan body; 2, positioning mechanism; 21, first fixed frame; 22, two-way screw rod; 23, rotating sleeve; 24, moving plate; 25, fixed sleeve; 26, limiting rod; 3, fixed mechanism; 31, rectangular limiting ring; 32, positioning plate; 33, rectangular sliding ring; 34, second fixed frame; 35, plug rod; 36, insertion hole; 37, fixed ring; 38, fixed plate; 39, spring; 311, sliding plate; 312, sliding groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0026] In the utility model, unless another explicit provision and limitation, the terms "mount", "connect", "fix", and other terms should be understood broadly, for example, can be fixed connection, can be detachable connection, or be integrated, can be mechanical connection, can be electrical connection, can be direct connection, can be indirect connection through intermediate medium, can be the communication inside two elements or the interaction of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0027] The utility model provides the following technical scheme:

[0028] Embodiment one

[0029] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a negative pressure fan convenient for outer wall fixation, including negative pressure fan body 1, negative pressure fan body 1 left and right sides are provided with positioning mechanism 2, and negative pressure fan body 1 surface is provided with fixed mechanism 3;

[0030] Positioning mechanism 2 includes first fixed frame 21, and first fixed frame 21 is symmetrically fixedly connected to the left and right sides of negative pressure fan body 1, and two-way screw rod 22 is arranged on the upper and lower sides in first fixed frame 21, fixed sleeve 25 is fixedly connected to the surface of two-way screw rod 22, moving plate 24 is symmetrically screw-connected on the surface of two-way screw rod 22, fixed cylinder is fixedly connected to the side of moving plate 24 away from first fixed frame 21, and limiting rod 26 is fixedly connected to the upper and lower sides of first fixed frame 21 close to negative pressure fan body 1.

[0031] The first fixed frame 21 is provided with holes matching the bidirectional screw 22 on the upper and lower sides, and the bidirectional screw 22 is rotatably connected to the holes.

[0032] The moving plate 24 is provided with holes matching the limiting rod 26 on the side close to the first fixed frame 21, and the moving plate 24 is slidably connected to the surface of the limiting rod 26 through the holes. The limiting rod 26 limits the moving plate 24, so that the moving plate 24 moves with the rotation of the bidirectional screw 22. The inner diameter of the fixed cylinder is greater than the diameter of the bidirectional screw 22.

[0033] Example two

[0034] Please refer to Figures 5-6 On the basis of example one, the fixing mechanism 3 is further obtained.

[0035] The fixing mechanism 3 comprises a rectangular limiting ring 31 fixedly connected to the surface of the negative pressure fan body 1 close to the back, and the front and back of the rectangular limiting ring 31 are symmetrically fixedly connected with positioning plates 32 on the front and back of the rectangular limiting ring 31. The rectangular limiting ring 31 is slidably connected with a rectangular sliding ring 33 on the front and back of the rectangular limiting ring 31. The rectangular sliding ring 33 is symmetrically fixedly connected with a second fixed frame 34 on the front and back of the rectangular sliding ring 33. The second fixed frame 34 is provided with insertion rods 35 on the left and right sides. The positioning plates 32 are provided with insertion holes 36 corresponding to the insertion rods 35 on the side close to the second fixed frame 34. The insertion rods 35 are fixedly connected with fixing rings 37 in the middle of the surface of the insertion rods 35. The second fixed frame 34 is fixedly connected with fixing plates 38 on the front and back of the second fixed frame 34. The insertion rods 35 are sleeved with springs 39 between the fixing rings 37 and the fixing plates 38. The insertion rods 35 are fixedly connected with sliding plates 311 on the other end of the insertion rods 35. The second fixed frame 34 is provided with sliding grooves 312 on the front and back of the second fixed frame 34.

[0036] The rectangular sliding ring 33 is provided with grooves matching the positioning plates 32 on the front and back of the rectangular sliding ring 33, and the positioning plates 32 are slidably connected to the grooves.

[0037] The second fixed frame 34 is provided with holes matching the insertion rods 35 on the left and right sides and the right side of the fixing plate 38, and the surface of the insertion rods 35 penetrates and is slidably connected to the holes.

[0038] One end of the spring 39 is fixedly connected to one side of the fixing ring 37, and the other end of the spring 39 is fixedly connected to the side of the fixing plate 38 away from the sliding plate 311. The sliding plate 311 is slidably connected to the sliding grooves 312 on the left and right sides and the upper and lower sides of the sliding plate 311.

[0039] In actual operation, when the device is used, the negative pressure fan body 1 is placed in the wall hole, the front surface of the rectangular limiting ring 31 is tightly attached to the wall surface, the distance of the negative pressure fan body 1 in the wall hole is measured by a tape measure, after the measurement, the two rotating sleeves 23 are rotated, the two bidirectional screw rods 22 are rotated, the two moving plates 24 connected with the bidirectional screw rods 22 are moved towards each other, the two fixed cylinders are moved towards each other, until the other ends of the two fixed cylinders tightly abut against the inside of the wall hole, the negative pressure fan body 1 is positioned, the negative pressure fan body 1 cannot be moved in the wall hole, and the installation of the negative pressure fan body 1 is more convenient.

[0040] After the negative pressure fan body 1 is positioned, the rectangular sliding ring 33 is slid to the surface of the negative pressure fan body 1, and the surface of the positioning plate 32 is also slid into the groove in the front surface of the rectangular sliding ring 33, the two sliding plates 311 are pressed by hand during the sliding of the rectangular sliding ring 33, the two sliding plates 311 are moved towards each other, the two inserting rods 35 are moved towards each other, the movement of the inserting rods 35 compresses the springs 39, when the back surface of the rectangular sliding ring 33 is attached to the wall surface, the two sliding plates 311 are released, the two inserting rods 35 are reversely moved towards each other by the elastic force of the springs 39, the other ends of the inserting rods 35 are inserted into the insertion holes 36, the positioning plate 32 and the rectangular limiting ring 31 are fixed, and the negative pressure fan body 1 is stably fixed in the wall hole.

[0041] It should be noted that, in the present document, the terms such as first and second, etc. are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

Claims

1. A negative pressure fan for facilitating the fixing of an external wall, comprising a negative pressure fan body (1), characterized in that: The negative pressure fan body (1) is provided with positioning mechanisms (2) on the left and right sides, and the surface of the negative pressure fan body (1) is provided with a fixing mechanism (3); The positioning mechanism (2) comprises a first fixing frame (21) which is fixedly connected to the left and right sides of the negative pressure fan body (1) in a symmetrical manner, and a bidirectional screw rod (22) is arranged on the upper and lower sides in the first fixing frame (21), a fixing sleeve (25) is fixedly connected to the surface of the bidirectional screw rod (22), a moving plate (24) is symmetrically screw-connected to the upper and lower surfaces of the bidirectional screw rod (22), and a fixing cylinder is fixedly connected to the side, away from the first fixing frame (21), of the moving plate (24); and a limiting rod (26) is fixedly connected to the upper and lower sides of the first fixing frame (21) close to the negative pressure fan body (1).

2. The negative pressure fan for facilitating the fixing of an exterior wall according to claim 1, characterized in that: Holes matched with the bidirectional screw rod (22) are formed in the upper and lower sides of the first fixing frame (21), and the bidirectional screw rod (22) is rotatably connected to the holes.

3. The negative pressure fan for easy fixing of an exterior wall according to claim 1, characterized in that: A hole matched with the limiting rod (26) is formed in the side, close to the first fixing frame (21), of the moving plate (24), and the moving plate (24) is slidingly connected to the surface of the limiting rod (26) through the hole; and the inner diameter of the fixing cylinder is greater than the diameter of the bidirectional screw rod (22).

4. The negative pressure fan for easy fixing of an exterior wall according to claim 1, characterized in that: The fixing mechanism (3) comprises a rectangular limiting ring (31) which is fixedly connected to the surface of the negative pressure fan body (1) close to the back, a positioning plate (32) which is fixedly connected to the front and back surfaces of the rectangular limiting ring (31) in a left-right symmetrical manner, a rectangular sliding ring (33) which is slidingly connected to the front and back surfaces of the negative pressure fan body (1), a second fixing frame (34) which is fixedly connected to the front and back surfaces of the rectangular sliding ring (33) in a left-right symmetrical manner, an insertion rod (35) which is arranged on the left and right sides of the second fixing frame (34), an insertion hole (36) which is formed in the side, close to the second fixing frame (34), of the positioning plate (32) and matched with the insertion rod (35), a fixing ring (37) which is fixedly connected to the surface of the insertion rod (35) in the middle, a fixing plate (38) which is fixedly connected to the front and back surfaces of the second fixing frame (34) in a left-right symmetrical manner, a spring (39) which is sleeved with the insertion rod (35) between the fixing ring (37) and the fixing plate (38), and a sliding plate (311) which is fixedly connected to the other end of the insertion rod (35), and a sliding groove (312) is formed in the front surface of the second fixing frame (34).

5. The negative pressure fan for easy fixing of an exterior wall according to claim 4, characterized in that: A groove matched with the positioning plate (32) is formed in the front surface of the rectangular sliding ring (33), and the positioning plate (32) is slidingly connected to the groove.

6. The negative pressure fan for easy fixing of an exterior wall according to claim 4, characterized by: Holes matched with the insertion rod (35) are formed in the left and right sides of the second fixing frame (34) and the right side of the fixing plate (38), and the insertion rod (35) is slidingly connected to the holes.

7. The negative pressure fan for easy fixing of an exterior wall according to claim 4, characterized in that: One end of the spring (39) is fixedly connected to one side of the fixing ring (37), the other end of the spring (39) is fixedly connected to the side, away from the sliding plate (311), of the fixing plate (38), and the sliding plate (311) is slidingly connected to the sliding groove (312) in a left-right symmetrical manner.

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