Differential pressure measuring device of air feeder

Abstract

The utility model discloses a pressure difference measuring device of an air feeder, which relates to the technical field of pressure difference measurement, and comprises a pressure difference measuring instrument main body, and further comprises an assembling and adjusting unit and a limiting unit which are arranged on the pressure difference measuring instrument main body, the assembling and adjusting unit comprises a telescopic assembling and connecting pipe, a supporting block, a vertical sliding rod, a supporting arm and a rectangular frame plate; the limiting unit comprises a two-way lead screw, a supporting batten and a limiting arc plate. According to the utility model, the contraction assembly connecting pipe formed by the plurality of sections of pipelines with different diameter sizes can be connected with rubber pipes with various sizes; a U-shaped supporting arm which assists in supporting the rectangular frame plate can slide and ascend and descend on a vertical sliding rod on the bottom face of a supporting block to help the limiting unit to integrally ascend and descend so as to change the locking position of the rubber pipe, and the telescopic assembly pipe can be fixed at multiple heights. The equipment is suitable for rubber pipes with wide sizes, and the fixing position is flexibly adjusted without replacement operation.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure difference measurement, in particular to a pressure difference measuring device for a blower. Background Art

[0002] The basic working principle of the differential pressure measuring instrument is to use two rubber tubes to connect to different pressure environments respectively, and the other ends are connected to the same set of pressure sensors. The pressure difference of the environments measured by the two rubber tubes is judged by the value of the pressure sensor. The rubber tube of the existing digital micro differential pressure measuring instrument is easy to loosen when connected to the differential pressure measuring instrument, causing the rubber tube to fall off and making the measurement inaccurate. Secondly, the connector of the existing digital micro differential pressure measuring instrument cannot be replaced, and some rubber tubes of different models may not be inserted smoothly.

[0003] The publication (announcement) number is CN214843764U, which discloses a digital micro differential pressure measuring instrument, including a differential pressure measuring instrument, wherein the upper end of the differential pressure measuring instrument is fixedly connected with two groups of connection ports, the outer side of each group of connection ports is threadedly connected with a square head, the left and right sides of each group of the square heads are fixedly connected with two groups of support frames, a rotating shaft is rotatably connected between the two groups of support frames on the same side of each group of square heads, a rotating rod is fixedly connected to the cylindrical outer surface of each group of the rotating shaft, a spring is fixedly connected to one side of the rotating rod, and the spring is fixedly connected to the square head, and a round head is fixedly connected to the outer side of each group of the square heads, and one end of the round head is pointed. In the utility model, the square head can be threadedly connected to the connection port, which is convenient for disassembly and replacement, and is convenient for replacement with a round head model corresponding to the rubber tube, and the rotating rod can clamp the rubber tube on the round head under the action of the spring to prevent the rubber tube from falling off.

[0004] Although the above scheme is convenient for replacing with a round head model corresponding to the rubber tube and preventing the rubber tube from falling off, the size of the connecting head is fixed and the size of the rubber tube is limited, so it is troublesome to replace them one by one. In addition, the rubber tube locking parts are set one by one corresponding to each square head. The equipment has a large demand for rubber tube locking parts. For this reason, we propose a pressure difference measuring device for the blower. Utility Model Content

[0005] The main purpose of the utility model is to provide a pressure difference measuring device for a blower. By setting a group adjustment unit and a limit unit, the utility model solves the problems that the size of the connector is fixed and the size of the rubber tube is limited, so it is troublesome to replace them one by one, and the equipment has a large demand for rubber tube locking parts.

[0006] To solve the above technical problems, the utility model is implemented by the following technical solutions: a pressure difference measuring device for a blower, comprising a pressure difference measuring instrument body, and further comprising: a group connection adjustment unit and a limit unit arranged on the pressure difference measuring instrument body;

[0007] The splicing adjustment unit includes a shrinkage splicing pipe, a support block, a vertical sliding rod, a support arm, and a rectangular frame plate. There are two shrinkage splicing pipes in total, which are symmetrically and fixedly arranged on the top surface of the differential pressure measuring instrument body. The shrinkage splicing pipe is composed of multiple pipes with different diameters. The support block is fixedly arranged on one side surface at the top end of the differential pressure measuring instrument body. The vertical sliding rod is fixedly arranged on the bottom surface of the support block. The support arm is in a "U" shape and is movably sleeved on the outer peripheral surface of the vertical sliding rod. The rectangular frame plate is fixedly arranged on the end surface of the support arm and is located above the differential pressure measuring instrument body, and the inside of the rectangular frame plate is hollow;

[0008] The limiting unit includes a bidirectional lead screw, a support strip plate, and a limiting arc plate. The bidirectional lead screw is movably arranged on the inner wall at one end of the rectangular frame plate. There are two support strip plates in total, which respectively cooperate with the positive and negative two threaded segments symmetrically arranged on the bidirectional lead screw. Every two limiting arc plates are in a group and are symmetrically and fixedly arranged on one side surface of a support strip plate, and the concave surface of the limiting arc plate faces the outer peripheral surface of the shrinkage splicing pipe. One end of the bidirectional lead screw that extends out of the rectangular frame plate is fixedly provided with a turntable.

[0009] Preferably, there are two support blocks in total, which are symmetrically distributed on the opposite sides of the differential pressure measuring instrument body. The vertical sliding rod and the support arm are arranged in one-to-one correspondence with the support block.

[0010] Preferably, the limiting unit further includes a guide rod. The guide rod is fixedly arranged on the inner wall at the other end of the rectangular frame plate and movably penetrates through the two support strip plates.

[0011] Preferably, the guide rod is arranged perpendicular to the vertical sliding rod.

[0012] Preferably, a display screen and an operation button are fixedly installed on one side surface of the differential pressure measuring instrument body.

[0013] Preferably, a temperature sensor and a suction cup are fixedly installed on the other side surface of the differential pressure measuring instrument body, and the suction cup is located below the temperature sensor.

[0014] Compared with the prior art, the differential pressure measuring device of a blower of the present utility model has the following beneficial effects:

[0015] 1. In the present utility model, by setting the splicing adjustment unit, the shrinkage splicing pipe composed of multiple pipes with different diameters can be connected to rubber pipes of various sizes. The rectangular frame plate serves as the carrier of the limiting unit. After the rubber pipe is sleeved on the shrinkage splicing pipe at different height positions, the rectangular frame plate provides auxiliary support. The support arm in a "U" shape can slide up and down on the vertical sliding rod at the bottom surface of the support block to help the overall limiting unit lift and change the locking position of the rubber pipe. The shrinkage splicing pipe can be fixed at multiple heights. The device is applicable to a wide range of rubber pipe sizes and the adjustment and fixing positions are flexible without the need for replacement operations.

[0016] 2. In the utility model, by setting a limit unit, the rectangular frame plate drives the limit arc plate to rise and fall to the outside of the rubber tube sleeve part, and the bidirectional screw rod can be controlled to rotate forward and backward on the rectangular frame plate by holding the turntable. The two support strips threadedly connected to the bidirectional screw rod can move relative to each other under the action of force, which can help the two groups of limit arc plates to adjust the spacing on the outside of the two contraction group pipes. The guide rod can guide the support strips to slide and translate and provide auxiliary support for them. The two groups of limit arc plates can synchronously clamp the two rubber tubes on the two contraction group pipes to prevent them from falling off. The equipment is easy to operate and has low demand for locking the rubber tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of a pressure difference measuring device for a blower according to the utility model;

[0019] Figure 2 It is a front view structural schematic diagram of a pressure difference measuring device for a blower according to the utility model;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0021] Figure 4 The utility model is a schematic diagram of the top view of the pressure difference measuring device of the blower.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. The main body of the differential pressure measuring instrument;

[0024] 2. Assembly adjustment unit; 201. Contraction assembly pipe; 202. Support block; 203. Vertical slide bar; 204. Support arm; 205. Rectangular frame plate;

[0025] 3. Limiting unit; 301. Bidirectional screw rod; 302. Support strip; 303. Limiting arc plate; 304. Guide rod;

[0026] 4. Display screen;

[0027] 5. Operation buttons;

[0028] 6. Temperature sensor;

[0029] 7. Suction cup. Detailed implementation manners

[0030] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. Embodiment

[0033] As Figure 1 、 Figure 2 and Figure 3 shown, a differential pressure measuring device for a blower includes a differential pressure measuring instrument main body 1, and further includes: an assembly adjustment unit 2 and a limiting unit 3 provided on the differential pressure measuring instrument main body 1;

[0034] The assembly adjustment unit 2 includes a shrinkable assembly pipe 201, a support block 202, a vertical sliding rod 203, a support arm 204 and a rectangular frame plate 205. There are two shrinkable assembly pipes 201 in total, which are symmetrically and fixedly arranged on the top surface of the differential pressure measuring instrument main body 1. The shrinkable assembly pipe 201 is composed of multiple pipes with different diameters. The support block 202 is fixedly arranged on one side surface of the top end of the differential pressure measuring instrument main body 1. The vertical sliding rod 203 is fixedly arranged on the bottom surface of the support block 202. The support arm 204 is in a "U" shape and is movably sleeved on the outer peripheral surface of the vertical sliding rod 203. The rectangular frame plate 205 is fixedly arranged on the end surface of the support arm 204 and is located above the differential pressure measuring instrument main body 1, and the inside of the rectangular frame plate 205 is hollow;

[0035] The limiting unit 3 includes a bidirectional lead screw 301, a support strip plate 302, and a limiting arc plate 303. The bidirectional lead screw 301 is movably arranged on the inner wall of one end of the rectangular frame plate 205. There are two support strip plates 302 in total, which respectively cooperate with the positive and negative two sections of symmetric threads on the bidirectional lead screw 301. Every two limiting arc plates 303 form a group and are symmetrically and fixedly arranged on one side surface of a support strip plate 302, and the concave surface of the limiting arc plate 303 faces the outer peripheral surface of the shrinkage group connection pipe 201.

[0036] Further, there are two support blocks 202 in total, which are symmetrically distributed on the opposite sides of the differential pressure gauge main body 1. The vertical slide rod 203 and the support arm 204 are arranged in one-to-one correspondence with the support blocks 202.

[0037] Further, a display screen 4 and operation buttons 5 are fixedly installed on one side surface of the differential pressure gauge main body 1.

[0038] Further, a temperature sensor 6 and a suction cup 7 are fixedly installed on the other side surface of the differential pressure gauge main body 1, and the suction cup 7 is located below the temperature sensor 6.

[0039] The group connection adjustment unit 2 enables the device to be applicable to a wide range of rubber tube sizes and the adjustment and fixing positions are flexible without the need for replacement operations. Embodiment

[0040] As Figure 1 、 Figure 3 and Figure 4 shown, a differential pressure measuring device for a blower includes a differential pressure gauge main body 1, and further includes: a group connection adjustment unit 2 and a limiting unit 3 arranged on the differential pressure gauge main body 1;

[0041] The group connection adjustment unit 2 includes a shrinkage group connection pipe 201, support blocks 202, vertical slide rods 203, support arms 204, and a rectangular frame plate 205. There are two shrinkage group connection pipes 201 in total, which are symmetrically and fixedly arranged on the top surface of the differential pressure gauge main body 1. The shrinkage group connection pipe 201 is composed of multiple pipes with different diameter sizes. The support blocks 202 are fixedly arranged on one side surface of the top end of the differential pressure gauge main body 1. The vertical slide rods 203 are fixedly arranged on the bottom surface of the support blocks 202. The support arms 204 are in a "U" shape and are movably sleeved on the outer peripheral surface of the vertical slide rods 203. The rectangular frame plate 205 is fixedly arranged on the end face of the support arms 204 and is located above the differential pressure gauge main body 1, and the inside of the rectangular frame plate 205 is hollow;

[0042] The limiting unit 3 includes a bidirectional lead screw 301, a support strip plate 302, and a limiting arc plate 303. The bidirectional lead screw 301 is movably arranged on the inner wall of one end of the rectangular frame plate 205. There are two support strip plates 302 in total, which respectively cooperate with the positive and negative two sections of symmetric threads on the bidirectional lead screw 301. Every two limiting arc plates 303 form a group and are symmetrically and fixedly arranged on one side surface of a support strip plate 302, and the concave surface of the limiting arc plate 303 faces the outer peripheral surface of the shrinkage group connecting pipe 201.

[0043] Further, the limiting unit 3 further includes a guide rod 304. The guide rod 304 is fixedly arranged on the inner wall of the other end of the rectangular frame plate 205 and movably penetrates through the two support strip plates 302.

[0044] Further, the guide rod 304 is arranged perpendicular to the vertical slide rod 203.

[0045] Further, a display screen 4 and operation buttons 5 are fixedly installed on one side surface of the differential pressure gauge main body 1.

[0046] Further, a temperature sensor 6 and a suction cup 7 are fixedly installed on the other side surface of the differential pressure gauge main body 1, and the suction cup 7 is located below the temperature sensor 6.

[0047] The limiting unit 3 makes the locking operation of the equipment on the rubber tube simple and the demand low.

[0048] The working principle of the present utility model is as follows:

[0049] The shrinkage group connecting pipe 201 composed of multi-section pipes with different diameter sizes is connected to rubber tubes with various sizes. The rectangular frame plate 205 serves as the carrier of the limiting unit 3. After the rubber tube is sleeved on the shrinkage group connecting pipe 201 at different height positions, the support arm 204 in a "U" shape that assists in supporting the rectangular frame plate 205 slides up and down on the vertical slide rod 203 at the bottom surface of the support block 202 to help the overall lifting of the limiting unit 3 to change the locking position of the rubber tube. Hold the turntable to control the bidirectional lead screw 301 to rotate forward and backward on the rectangular frame plate 205. The two support strip plates 302 threadedly connected to the bidirectional lead screw 301 move relatively under the action of force to help the two groups of limiting arc plates 303 adjust the distance on the outer sides of the two shrinkage group connecting pipes 201. The guide rod 304 guides the sliding and translation of the support strip plates 302. The two groups of limiting arc plates 303 synchronously clamp and fix the two rubber tubes on the two shrinkage group connecting pipes 201 to prevent them from falling off.

[0050] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pressure difference measuring device for a blower, comprising a pressure difference measuring instrument body (1), characterized in that: Also included are: A group connection and adjustment unit (2) and a limit unit (3) arranged on the main body (1) of the differential pressure gauge; The group connection and adjustment unit (2) includes a shrinkable group connection pipe (201), a support block (202), a vertical slide bar (203), a support arm (204), and a rectangular frame plate (205). There are two shrinkable group connection pipes (201) which are symmetrically and fixedly arranged on the top surface of the main body (1) of the differential pressure gauge. The shrinkable group connection pipe (201) is composed of multiple pipes with different diameter sizes. The support block (202) is fixedly arranged on one side surface at the top end of the main body (1) of the differential pressure gauge. The vertical slide bar (203) is fixedly arranged on the bottom surface of the support block (202). The support arm (204) is in a "U" shape and is movably sleeved on the outer peripheral surface of the vertical slide bar (203). The rectangular frame plate (205) is fixedly arranged on the end surface of the support arm (204) and is located above the main body (1) of the differential pressure gauge, and the inside of the rectangular frame plate (205) is hollow; The limit unit (3) includes a bidirectional lead screw (301), a support strip plate (302), and a limit arc plate (303). The bidirectional lead screw (301) is movably arranged on the inner wall at one end of the rectangular frame plate (205). There are two support strip plates (302) which respectively cooperate with the positive and negative two sections of threads symmetrically arranged on the bidirectional lead screw (301). Every two limit arc plates (303) form a group and are symmetrically and fixedly arranged on one side surface of a support strip plate (302), and the concave surface of the limit arc plate (303) faces the outer peripheral surface of the shrinkable group connection pipe (201).

2. The pressure difference measuring device for a blower according to claim 1, characterized in that: There are two support blocks (202) which are symmetrically distributed on the opposite sides of the main body (1) of the differential pressure gauge, and the vertical slide bar (203) and the support arm (204) are arranged in one-to-one correspondence with the support block (202).

3. The pressure difference measuring device for a blower according to claim 1, characterized in that: The limit unit (3) further includes a guide rod (304). The guide rod (304) is fixedly arranged on the inner wall at the other end of the rectangular frame plate (205) and movably penetrates through the two support strip plates (302).

4. The pressure difference measuring device for a blower according to claim 3, characterized in that: The guide rod (304) is perpendicularly arranged to the vertical slide bar (203).

5. The pressure difference measuring device for a blower according to claim 1, characterized in that: A display screen (4) and an operation button (5) are fixedly installed on one side surface of the main body (1) of the differential pressure gauge.

6. The pressure difference measuring device for a blower according to claim 1, characterized in that: A temperature sensor (6) and a suction cup (7) are fixedly installed on the other side surface of the main body (1) of the differential pressure gauge, and the suction cup (7) is located below the temperature sensor (6).

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