Heat exchanger for chemical production

Abstract

The utility model discloses a heat exchanger for chemical production, which comprises a heat exchanger shell, a cover plate, a feed pipe, a discharge pipe, a first external pipe and a second external pipe, the heat exchanger shell is hollow, the cover plate mounted by screws is arranged above the heat exchanger shell, and a sealing rubber strip is arranged at the contact position of the cover plate and the heat exchanger shell. A feeding pipe and a discharging pipe which are connected through flanges are arranged at the bottom of the heat exchanger shell and connected with the cover plate, the feeding pipe and the discharging pipe are both communicated with the heat exchanger shell, a first external pipe in threaded connection is arranged on one side of the heat exchanger shell, a second external pipe in threaded connection is arranged on the other side of the heat exchanger shell, the first external pipe is located below the heat exchanger shell, and the second external pipe is located below the heat exchanger shell. The second external connection pipe is located above the heat exchanger shell, and heat exchange media circulate in the first external connection pipe and the second external connection pipe. The device is reasonable in design; and the heat exchange medium inlet pipe and the heat exchange medium outlet pipe are easily separated from the heat exchanger shell, so that later cleaning is facilitated.

Description

Technical Field

[0001] The utility model relates to a heat exchanger used in chemical production. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. It plays an important role in chemical production. Existing heat exchangers in chemical production will produce certain impurities during use. The heat exchange tubes will become clogged after long-term use, which will affect the subsequent heat exchange. The impurities in the heat exchange tubes or heat exchangers are not easy to clean. Utility Model Content

[0003] The purpose of the utility model is to provide a heat exchanger for chemical production to solve the above technical problems.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A heat exchanger for chemical production comprises a heat exchanger shell, a cover plate, a feed pipe, a discharge pipe, a first external pipe and a second external pipe. The heat exchanger shell is hollow in design. A cover plate mounted with screws is provided above the heat exchanger shell. A sealing strip is provided at the position where the cover plate contacts the heat exchanger shell. A feed pipe connected with a flange is provided at the bottom of the heat exchanger shell. The discharge pipe is connected with the cover plate, and the feed pipe and the discharge pipe are both connected with the heat exchanger shell. A first external pipe connected with a thread is provided on one side of the heat exchanger shell, and a second external pipe connected with a thread is provided on the other side of the heat exchanger shell. The first external pipe is located below the heat exchanger shell, and the second external pipe is located above the heat exchanger shell. Heat exchange medium circulates in the first external pipe and the second external pipe.

[0006] Preferably, the first external pipe enters the heat exchanger shell, and the first external pipe located in the heat exchanger shell is threadedly connected to the heat exchange medium inlet pipe, the heat exchange medium inlet pipe is located inside the heat exchanger shell, the heat exchange medium inlet pipe is designed to be blocked at one end away from the first external pipe, the second external pipe is threadedly connected to the heat exchange medium outlet pipe, the heat exchange medium outlet pipe away from one end of the second external pipe is designed to be blocked, and the heat exchange medium inlet pipe is connected to the heat exchange medium outlet pipe via an arc pipe.

[0007] Preferably, a slide groove is provided on one side of the interior of the heat exchanger shell, and the heat exchange medium inlet pipe is arranged close to the slide groove. A slider installed with a pipe clamp is provided on the heat exchange medium inlet pipe, and the slider is connected to the slide groove. A ring is sleeved on the arc tube, and a plate body installed with screws is provided on the ring. The material of the ring and the plate body is the same as that of the arc tube, the heat exchange medium inlet pipe, and the heat exchange medium outlet pipe, which are all iron materials.

[0008] Preferably, a scraper is provided at the inner bottom of the heat exchanger shell, the scraper is threadedly connected to the screw rod, and a part of the screw rod extends out of the heat exchanger shell.

[0009] Preferably, a guide rod is provided at one end of the scraper away from the screw rod, the guide rod is located in the heat exchanger shell, and the scraper is in contact with the bottom of the heat exchanger shell.

[0010] Compared with the prior art, the utility model has the following advantages: the utility model has a reasonable design; the cover plate is connected to the heat exchanger shell to form a whole; when the heat exchange tube needs to be cleaned, the cover plate is separated from the heat exchanger shell, so that the first external tube is separated from the heat exchange medium inlet tube, and the second external tube is separated from the heat exchange medium outlet tube; after separation, the heat exchange medium inlet tube, the arc tube, and the heat exchange medium outlet tube can be taken out of the heat exchanger shell along the slide groove, so as to dredge the blockage, and at the same time, the surface can be cleaned and tested; the scraper at the bottom of the heat exchanger shell can move forward and backward under the drive of the screw rod to clean the impurities at the bottom of the heat exchanger shell, thereby improving the cleaning effect; the ring and plate on the arc tube increase the contact area and thus improve the heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of a heat exchanger used in chemical production according to the utility model.

[0012] Figure 2 It is a cross-sectional view of the utility model used for a heat exchanger in chemical production.

[0013] Figure 3 The utility model is a schematic diagram of a heat exchange medium inlet pipe and a heat exchange medium outlet pipe of a heat exchanger for chemical production.

[0014] Figure 4 It is a partial schematic diagram of the scraper used in the heat exchanger of chemical production according to the utility model. DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] like Figure 1-4As shown, a heat exchanger for chemical production includes a heat exchanger shell 1, a cover plate 2, a feed pipe 3, a discharge pipe 4, a first external pipe 15, and a second external pipe 16. The heat exchanger shell 1 is hollow in design. A cover plate 2 mounted with screws is provided above the heat exchanger shell 1. A sealing strip is provided at a position where the cover plate 2 contacts the heat exchanger shell 1. A feed pipe 3 connected with a flange is provided at the bottom of the heat exchanger shell 1. The discharge pipe 4 is connected with the cover plate 2, and the feed pipe 3 and the discharge pipe 4 are both connected with the heat exchanger shell 1. A first external pipe 15 is provided on one side of the heat exchanger shell 1, and a second external pipe 16 is provided on the other side of the heat exchanger shell 1. The first external pipe 15 is located below the heat exchanger shell 1, and the second external pipe 16 is located above the heat exchanger shell 1. The heat exchange medium flows through the first external pipe 15 and the second external pipe 16. The first external pipe 15 enters the heat exchanger shell 1, and the first external pipe 15 located in the heat exchanger shell 1 is threadedly connected to the heat exchange medium inlet pipe 5. The heat exchange medium inlet pipe 5 is located above the heat exchanger shell 1. 1, the end of the heat exchange medium inlet pipe 5 away from the first external pipe 15 is of a plugging design, the second external pipe 16 is threadedly connected to the heat exchange medium outlet pipe 6, the heat exchange medium outlet pipe 6 away from the second external pipe 16 is of a plugging design, the heat exchange medium inlet pipe 5 is connected to the heat exchange medium outlet pipe 6 through the arc pipe 7, a slide groove 8 is provided on one side of the heat exchanger shell 1, the heat exchange medium inlet pipe 5 is arranged near the slide groove 8, a slide block 11 installed with a pipe clamp is provided on the heat exchange medium inlet pipe 5, the slide block 11 is connected to the slide groove 8, the arc pipe 7 is connected to the heat exchange medium outlet pipe 6, and the arc pipe 7 is connected to the heat exchange medium outlet pipe 6. A circular ring 12 is sleeved on the arc tube 7, and a plate body 13 mounted with screws is provided on the circular ring 12. The material of the circular ring 12 and the plate body 13 is the same as that of the arc tube 7, the heat exchange medium inlet pipe 5, and the heat exchange medium outlet pipe 6, which are all iron materials. A scraper 10 is provided at the bottom of the heat exchanger shell 1. The scraper 10 is threadedly connected to the screw rod 9, and a part of the screw rod 9 extends out of the heat exchanger shell 1. A guide rod 14 is provided at one end of the scraper 10 away from the screw rod 9. The guide rod 14 is located in the heat exchanger shell 1, and the scraper 10 is in contact with the bottom of the heat exchanger shell 1.

[0017] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A heat exchanger for chemical production, comprising a heat exchanger shell (1), a cover plate (2), a feed pipe (3), a discharge pipe (4), a first external pipe (15), and a second external pipe (16), characterized in that: The heat exchanger shell (1) is of hollow design. A cover plate (2) mounted with screws is provided above the heat exchanger shell (1). A sealing strip is provided at a position where the cover plate (2) contacts the heat exchanger shell (1). A feed pipe (3) connected with a flange is provided at the bottom of the heat exchanger shell (1). A discharge pipe (4) is connected with the cover plate (2). Both the feed pipe (3) and the discharge pipe (4) are connected with the heat exchanger shell (1). A first external pipe (15) connected with a thread is provided on one side of the heat exchanger shell (1). A second external pipe (16) connected with a thread is provided on the other side of the heat exchanger shell (1). The first external pipe (15) is located below the heat exchanger shell (1), and the second external pipe (16) is located above the heat exchanger shell (1). Heat exchange medium circulates in the first external pipe (15) and the second external pipe (16).

2. A heat exchanger for chemical production according to claim 1, characterized in that: The first external pipe (15) enters the heat exchanger shell (1), and the first external pipe (15) located in the heat exchanger shell (1) is threadedly connected to the heat exchange medium inlet pipe (5). The heat exchange medium inlet pipe (5) is located inside the heat exchanger shell (1). The end of the heat exchange medium inlet pipe (5) away from the first external pipe (15) is of a plugging design. The second external pipe (16) is threadedly connected to the heat exchange medium outlet pipe (6). The heat exchange medium outlet pipe (6) away from the end of the second external pipe (16) is of a plugging design. The heat exchange medium inlet pipe (5) is connected to the heat exchange medium outlet pipe (6) via an arc pipe (7).

3. The heat exchanger for chemical production according to claim 1, characterized in that: A slide groove (8) is provided on one side of the interior of the heat exchanger shell (1), a heat exchange medium inlet pipe (5) is arranged near the slide groove (8), a slide block (11) mounted with a pipe clamp is provided on the heat exchange medium inlet pipe (5), the slide block (11) is connected to the slide groove (8), a circular ring (12) is sleeved on the arc tube (7), a plate body (13) is mounted with screws on the circular ring (12), and the material of the circular ring (12) and the plate body (13) is the same as that of the arc tube (7), the heat exchange medium inlet pipe (5) and the heat exchange medium outlet pipe (6), all of which are iron materials.

4. The heat exchanger for chemical production according to claim 1, characterized in that: The inner bottom of the heat exchanger housing (1) is provided with a scraper (10), the scraper (10) is threadedly connected to the screw rod (9), and a portion of the screw rod (9) extends out of the heat exchanger housing (1).

5. The heat exchanger for chemical production according to claim 4, characterized in that: A guide rod (14) is provided at one end of the scraper (10) away from the screw rod (9); the guide rod (14) is located inside the heat exchanger shell (1); and the scraper (10) is in contact with the bottom of the heat exchanger shell (1).

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