Plate heat exchanger

Abstract

The utility model discloses a plate heat exchanger which comprises a plate heat exchanger body, a liquid inlet pipe and a liquid outlet pipe are respectively arranged on the front side of the plate heat exchanger body, a locking ring is installed inside the liquid inlet pipe, a first filter screen is fixed on the rear side of the locking ring, and a second filter screen is fixed on the rear side of the first filter screen. A first pipeline is fixed to the center of the rear side of the first filter screen, a second pipeline is arranged on the outer side of the first pipeline, a second filter screen is fixed to the end of the second pipeline, the plate heat exchanger is provided with the first filter screen, and the first filter screen is of a hemispherical structure, so that the filter area of the first filter screen is increased; the blocking probability of the first filter screen is reduced, the number of times of cleaning the first filter screen is reduced, the flowing liquid can flush impurities on the first filter screen into the second filter screen to be collected, the amount of the impurities adsorbed on the first filter screen is reduced, and therefore the number of times of cleaning the first filter screen is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field, concretely is a plate heat exchanger. BACKGROUND

[0002] Plate heat exchanger is by a series of have certain blog shape metal sheet stack and form a kind of high-efficiency heat exchanger, various sheet form thin rectangular channel, and heat exchange is carried out through sheet.

[0003] However, the existing plate heat exchanger, in order to avoid the impurities existing in the liquid entering its interior, will install filter screen in the interior of inlet pipe, and the existing filter screen is plane design, leading to small filter area, easy to block, and impurities can be adsorbed on filter screen, leading to filter screen blockage, need to clean frequently, leading to more troublesome.

[0004] In view of the above problem, it is urgent to carry out innovative design on the basis of the original plate heat exchanger. UTILITY MODEL CONTENTS

[0005] The utility model discloses a plate heat exchanger to solve the problem of the above background art.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a plate heat exchanger, including plate heat exchanger body, the front side of plate heat exchanger body is provided with inlet pipe and outlet pipe respectively, the inside installation of inlet pipe has locking ring, the rear side of locking ring is fixed with first filter screen, the center of first filter screen rear side is fixed with first pipe, the outside of first pipe is provided with second pipe, and the end of second pipe is fixed with second filter screen.

[0007] Preferably, the locking ring and inlet pipe are threadedly connected.

[0008] Preferably, the inside of the locking ring is fixed with a fixed plate.

[0009] Preferably, the first filter screen is designed as a hemispherical structure.

[0010] Preferably, the first pipe and the second pipe are threadedly connected.

[0011] Preferably, the end of the inlet pipe and the outlet pipe is provided with a mounting hole, and the mounting holes are distributed at equal angles about the central axis of the inlet pipe and the outlet pipe.

[0012] Preferably, the second filter screen is designed as a spherical structure.

[0013] Compared with the prior art, the plate heat exchanger has the advantages that the first filter screen is provided with a hemispherical structure, the filtering area of the first filter screen is increased, the probability of the first filter screen being blocked is reduced, the cleaning frequency of the first filter screen is reduced, impurities on the first filter screen can be flushed into the second filter screen, the amount of impurities adsorbed on the first filter screen is reduced, and thus the cleaning frequency of the first filter screen is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a top view of the sectional structure of the utility model;

[0015] Figure 2 It is a front view of the installation structure of the locking ring of the utility model;

[0016] Figure 3 It is a front view of the installation structure of the locking ring of the utility model; Figure 1 It is an enlarged structure diagram of the inside of the liquid inlet pipe of the utility model;

[0017] Figure 4 It is a front view of the structure of the first filter screen of the utility model;

[0018] Figure 5 It is a front view of the structure of the second filter screen of the utility model.

[0019] In the drawing: 1, plate heat exchanger body; 2, liquid inlet pipe; 3, liquid outlet pipe; 4, mounting hole; 5, locking ring; 6, fixed plate; 7, first filter screen; 8, first pipeline; 9, second pipeline; 10, second filter screen. DETAILED DESCRIPTION

[0020] 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, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-5 The utility model provides a kind of technical solutions: a kind of plate heat exchanger, including plate heat exchanger body 1, the front side of plate heat exchanger body 1 is provided with liquid inlet pipe 2 and liquid outlet pipe 3 respectively, liquid inlet pipe 2 is installed with locking ring 5 in the inside, the rear side of locking ring 5 is fixed with first filter screen 7, the center of first filter screen 7 rear side is fixed with first pipeline 8, the outside of first pipeline 8 is provided with second pipeline 9, the end of second pipeline 9 is fixed second filter screen 10, the end of liquid inlet pipe 2 and liquid outlet pipe 3 is all provided with mounting hole 4, mounting hole 4 is about the center axis of liquid inlet pipe 2 and liquid outlet pipe 3 equiangular distribution.

[0022] The locking ring 5 is threadedly connected with the liquid inlet pipe 2, the inside of the locking ring 5 is fixed with a fixing plate 6, the fixing plate 6 can drive the locking ring 5 to rotate by rotating, so that the locking ring 5 is conveniently disassembled from the inside of the liquid inlet pipe 2, and then the first filter screen 7 is conveniently disassembled from the inside of the liquid inlet pipe 2.

[0023] The first filter screen 7 is designed as a hemispherical structure, the filtering area of the first filter screen 7 is increased, the probability of the first filter screen 7 being blocked is reduced, and the cleaning frequency of the first filter screen 7 is reduced.

[0024] The first pipe 8 and the second pipe 9 are threadedly connected, the second pipe 9 and the second filter screen 10 are conveniently disassembled, and then the impurities collected in the second filter screen 10 are conveniently cleaned.

[0025] The second filter screen 10 is designed as a spherical structure, the amount of impurities collected in the second filter screen 10 is increased, and the filtering area is increased, and the cleaning frequency of the second filter screen 10 is reduced.

[0026] Working principle: when the plate heat exchanger is used, first, liquid enters the inside of the liquid inlet pipe 2, then enters the inside of the first filter screen 7 through the locking ring 5, the first filter screen 7 filters the impurities in the liquid, and the impurities are driven by the liquid and enter the inside of the second filter screen 10 through the first pipe 8 and the second pipe 9, the amount of impurities adsorbed on the first filter screen 7 is reduced, and the cleaning frequency of the first filter screen 7 is reduced.

[0027] When the impurities collected in the second filter screen 10 are too much and need to be cleaned, the fixing plate 6 is rotated, then the fixing plate 6 drives the locking ring 5 to rotate, because the locking ring 5 is threadedly connected with the liquid inlet pipe 2, the locking ring 5, the first filter screen 7, the first pipe 8, the second pipe 9 and the second filter screen 10 are taken out from the inside of the liquid inlet pipe 2, then the second pipe 9 is rotated, because the second pipe 9 is threadedly connected with the first pipe 8, the second pipe 9 and the second filter screen 10 are disassembled, and then the impurities in the second filter screen 10 are poured out.

[0028] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A plate heat exchanger, comprising a plate heat exchanger body (1), characterized in that: The front side of the plate heat exchanger body (1) is provided with an inlet pipe (2) and an outlet pipe (3). A locking ring (5) is installed inside the inlet pipe (2). A first filter screen (7) is fixed to the rear side of the locking ring (5). A first pipe (8) is fixed at the center of the rear side of the first filter screen (7). A second pipe (9) is provided on the outside of the first pipe (8). A second filter screen (10) is fixed at the end of the second pipe (9).

2. A plate heat exchanger according to claim 1, characterized in that: The locking ring (5) and the inlet pipe (2) are threaded together.

3. A plate heat exchanger according to claim 1, characterized in that: A fixing plate (6) is fixed inside the locking ring (5).

4. A plate heat exchanger according to claim 1, characterized in that: The first filter screen (7) is designed as a hemispherical structure.

5. A plate heat exchanger according to claim 1, characterized in that: The first pipe (8) and the second pipe (9) are threaded together.

6. A plate heat exchanger according to claim 1, characterized in that: The inlet pipe (2) and outlet pipe (3) are both provided with mounting holes (4) at their ends. The mounting holes (4) are distributed at equal angles with respect to the central axis of the inlet pipe (2) and outlet pipe (3).

7. A plate heat exchanger according to claim 1, characterized in that: The second filter (10) is designed as a spherical structure.

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