JPH0722614Y2 - Scraping heat exchanger - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scraped heat exchanger.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a scraping-type heat exchanger of the type in which a blade 10 is provided at the tip of a blade set pin 5 to prevent the scraping blade 4 from coming off,
Are known.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the scraping-type heat exchanger described in the above-mentioned prior art, since the brim is an obstacle, it is not easy to attach and detach the scraping blade. There were defects such as poor cleaning performance during the cleaning process and difficulty in configuring (manufacturing).

An object of the present invention is to provide a scraping-type heat exchanger which eliminates the above-mentioned defects.

[0005]

In order to achieve the above object, the scraped heat exchanger of the present invention has a product pressure passage 3 between the inner peripheral surface of the heat transfer wall 1 and the outer peripheral surface of the shaft 2. In the scraping-type heat exchanger, the scraping blade 4 provided in the pressure feeding path 3 and the inner circumferential surface of the heat transfer wall 1 and the tip surface 7 provided at a location corresponding to the scraping blade 4 on the outer circumferential surface of the shaft 2 are separated. A plurality of blade set pins 5 having a thickness smaller than the thickness of the scraping blade 4 and having the same thickness over the entire length, and the scraping blade 4 is formed at a position corresponding to the blade setting pin 5 and the pin 5 The pin 5 has a slightly larger set hole 6 depending on the thickness of the pin 5 which is loosely fitted to the pin.

[0006]

In the embodiment shown in the drawings, a scraping-type heat exchanger main body having a pressure feed passage 3 for the product between the inner peripheral surface of the heat transfer wall 1 and the outer peripheral surface of the shaft 2 is constructed. The scraping blade 4 is inserted, and the space between the inner peripheral surface of the heat transfer wall 1 and the tip surface 7 is smaller than the thickness of the scraping blade 4 at a position corresponding to the scraping blade 4 on the outer peripheral surface of the shaft 2. A plurality of round rod-shaped blade set pins 5 having the same length over the entire length are provided, and in the scraping blade 4, a circular set hole 6 having a slightly larger diameter than the blade set pin 5 is provided at a location corresponding to the blade set pin 5. And each set hole 6 is loosely fitted into the blade set pin 5 so as to be freely inserted and removed.

[0007]

In FIG. 1, when the shaft 2 rotates (operates) in the direction of the arrow, the cutting edge 8 of the scraping blade 4 is pressed against the inner surface of the heat transfer wall 1 by the product and the centrifugal force, and the scraping proceeds. The scraping blade 4 does not come off between the tip surface 7 of the blade set pin 5 and the inner peripheral surface of the heat transfer wall 1 even if the pressure balance in the pressure feeding path 3 is lost during operation. Yes, scraping blade 4 when shaft 2 is pulled out from inside heat transfer wall 1
Are those that naturally fall off the blade set pin 5.

[0008]

[Effect of the Invention] Since the present invention is constructed as described above,
By removing the shaft 2 from the inside of the heat transfer wall 1, the scraping blade can be easily attached and detached.
The attachment structure of the scraping blade 4 to the blade is extremely simple, and the cleaning performance in the internal cleaning step is very good.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a scraped heat exchanger of the present invention.

FIG. 2 is a front view showing how a scraping blade is attached to a shaft.

FIG. 3 is a plan view of the same.

FIG. 4 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

 1 Heat Transfer Wall 2 Shaft 3 Pressure Feeding Path 4 Scraping Blade 5 Blade Set Pin 6 Set Hole 7 Tip Surface 8 Blade Edge 10 Tsuba

Claims (1)

[Scope of utility model registration request] 1. A scraping-type heat exchanger having a product pressure feeding path 3 between an inner peripheral surface of a heat transfer wall 1 and an outer peripheral surface of a shaft 2, and a scraping blade 4 provided in the pressure feeding path 3 and a shaft. In the outer peripheral surface of 2, the space between the inner peripheral surface of the heat transfer wall 1 and the tip surface 7 provided at a location corresponding to the scraping blade 4 is smaller than the thickness of the scraping blade 4 and the thickness is the same over the entire length. It is slightly larger due to the thickness of the plurality of blade set pins 5 and the thickness of the scraping blade 4 which is formed at a position corresponding to the blade set pin 5 and is loosely fitted into the pin 5 so as to be freely inserted and removed. A scrape-type heat exchanger having a set hole 6.